{
    "systeminfos": {
        "version": {
            "value": "0.6.8",
            "description": "PredictionIO version"
        },
        "jars.pdioItemrecAlgo": {
            "value": "predictionio-process-hadoop-scalding-assembly-0.6.8.jar"
        },
        "jars.pdioItemsimAlgo": {
            "value": "predictionio-process-hadoop-scalding-assembly-0.6.8.jar"
        },
        "jars.mahoutItemrecAlgo": {
            "value": "predictionio-process-itemrec-algorithms-scala-mahout-assembly-0.6.8.jar"
        },
        "jars.pdioItemrecEval": {
            "value": "predictionio-process-hadoop-scalding-assembly-0.6.8.jar"
        },
        "jars.pdioItemsimEval": {
            "value": "predictionio-process-hadoop-scalding-assembly-0.6.8.jar"
        },
        "jars.pdioItemrecTopK": {
            "value": "predictionio-process-itemrec-evaluations-topkitems-assembly-0.6.8.jar"
        },
        "jars.pdioItemsimTopK": {
            "value": "predictionio-process-itemsim-evaluations-topkitems-assembly-0.6.8.jar"
        },
        "jars.pdioCommonsEval": {
            "value": "predictionio-process-hadoop-scalding-assembly-0.6.8.jar"
        },
        "jars.pdioCommonsParamGen": {
            "value": "predictionio-process-commons-evaluations-paramgen-assembly-0.6.8.jar"
        },
        "jars.pdioCommonsU2ITrainingTestSplit": {
            "value": "predictionio-process-commons-evaluations-scala-u2itrainingtestsplittime-assembly-0.6.8.jar"
        }
    },
    "engineinfos": {
        "itemrec": {
            "name": "Item Recommendation Engine",
            "description": "<h6>Recommend interesting items to each user personally.</h6><p>Sample Use Cases</p><ul><li>recommend top N items to users personally</li><li>predict users' future preferences</li><li>help users to discover new topics they may be interested in</li><li>personalize content</li><li>optimize sales</li></ul>",
            "defaultalgoinfoid": "mahout-itembased",
            "defaultofflineevalmetricinfoid": "map_k",
            "defaultofflineevalsplitterinfoid": "trainingtestsplit",
            "params": {
                "serendipity": {
                    "name": "Serendipity",
                    "description": "Preference for surprising discovery",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 0,
                    "ui": {
                        "uitype": "slider",
                        "slidermin": 0,
                        "slidermax": 10,
                        "sliderstep": 1
                    }
                },
                "freshness": {
                    "name": "Freshness",
                    "description": "Preference for newer items",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 0,
                    "ui": {
                        "uitype": "slider",
                        "slidermin": 0,
                        "slidermax": 10,
                        "sliderstep": 1
                    }
                },
                "unseenonly": {
                    "name": "",
                    "description": "",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "defaultvalue": false,
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Recommend Unseen Only",
                                "value": "true"
                            },
                            {
                                "name": "Recommend Any Items",
                                "value": "false"
                            }
                        ]
                    }
                },
                "goal": {
                    "name": "Recommend items that users will",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "defaultvalue": "rate3",
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "rate = 5",
                                "value": "rate5"
                            },
                            {
                                "name": "rate >= 4",
                                "value": "rate4"
                            },
                            {
                                "name": "rate >= 3",
                                "value": "rate3"
                            },
                            {
                                "name": "like",
                                "value": "like"
                            },
                            {
                                "name": "conversion",
                                "value": "conversion"
                            },
                            {
                                "name": "view",
                                "value": "view"
                            }
                        ]
                    }
                },
                "numRecommendations": {
                    "name": "",
                    "description": "Number of recommendations to be generated for each user",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 50,
                    "ui": {
                        "uitype": "text"
                    }
                }
            },
            "paramsections": [
                {
                    "name": "Recommendation Preferences",
                    "sectiontype": "normal",
                    "description": "You could adjust the following parameters using the sliders. Higher value means more important to your App.",
                    "params": [
                        "freshness",
                        "serendipity"
                    ],
                    "subsections": [
                        {
                            "name": "Unseen Items Only",
                            "sectiontype": "normal",
                            "description": "Should the system recommend items that users have seen before?",
                            "params": [
                                "unseenonly"
                            ]
                        },
                        {
                            "name": "Number of Recommendations",
                            "sectiontype": "normal",
                            "params": [
                                "numRecommendations"
                            ]
                        }
                    ]
                },
                {
                    "name": "Recommendation Goal",
                    "sectiontype": "normal",
                    "description": "Please define the goal to be maximized. Algorithms will be evaluated based on the goal defined here.",
                    "params": [
                        "goal"
                    ]
                }
            ]
        },
        "itemsim": {
            "name": "Item Similarity Engine",
            "description": "<h6>Discover similar items.</h6><p>Sample Use Cases</p><ul><li>predict what else would a user like if this user likes a, i.e. \"People who like this also like....\"</li><li>automatic item grouping</li></ul>",
            "defaultalgoinfoid": "mahout-itemsimcf",
            "defaultofflineevalmetricinfoid": "ismap_k",
            "defaultofflineevalsplitterinfoid": "trainingtestsplit",
            "params": {
                "serendipity": {
                    "name": "Serendipity",
                    "description": "Preference for surprising discovery",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 0,
                    "ui": {
                        "uitype": "slider",
                        "slidermin": 0,
                        "slidermax": 10,
                        "sliderstep": 1
                    }
                },
                "freshness": {
                    "name": "Freshness",
                    "description": "Preference for newer items",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 0,
                    "ui": {
                        "uitype": "slider",
                        "slidermin": 0,
                        "slidermax": 10,
                        "sliderstep": 1
                    }
                },
                "goal": {
                    "name": "Recommendation Goal",
                    "description": "Goal to be maximized",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "defaultvalue": "rate3",
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "rate = 5",
                                "value": "rate5"
                            },
                            {
                                "name": "rate >= 4",
                                "value": "rate4"
                            },
                            {
                                "name": "rate >= 3",
                                "value": "rate3"
                            },
                            {
                                "name": "like",
                                "value": "like"
                            },
                            {
                                "name": "conversion",
                                "value": "conversion"
                            },
                            {
                                "name": "view",
                                "value": "view"
                            }
                        ]
                    }
                },
                "numSimilarItems": {
                    "name": "",
                    "description": "Number of similar items to be generated for each item.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 50,
                    "ui": {
                        "uitype": "text"
                    }
                }
            },
            "paramsections": [
                {
                    "name": "Prediction Preferences",
                    "sectiontype": "normal",
                    "description": "You could adjust the following parameters using the sliders. Higher value means more important to your App.",
                    "params": [
                        "freshness",
                        "serendipity"
                    ],
                    "subsections": [
                        {
                            "name": "Number of Similar Items",
                            "sectiontype": "normal",
                            "params": [
                                "numSimilarItems"
                            ]
                        }
                    ]
                },
                {
                    "name": "Prediction Goal",
                    "sectiontype": "normal",
                    "description": "Please define the goal to be maximized. Algorithms will be evaluated based on the goal defined here.",
                    "params": [
                        "goal"
                    ]
                }
            ]
        }
    },
    "algoinfos": {
        "pdio-randomrank": {
            "name": "Random Rank",
            "description": "Predict user preferences randomly.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.randomrank.RandomRank --hdfs --training_dbType $appdataDbType$ --training_dbName $appdataDbName$ --training_dbHost $appdataDbHost$ --training_dbPort $appdataDbPort$ --modeldata_dbType $modeldataDbType$ --modeldata_dbName $modeldataDbName$ --modeldata_dbHost $modeldataDbHost$ --modeldata_dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.randomrank.RandomRank --hdfs --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --modelSet false --recommendationTime $recommendationTime$ --evalid $evalid$"
            ],
            "paramorder": [],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users and Items."
            ],
            "params": {},
            "paramsections": []
        },
        "pdio-latestrank": {
            "name": "Latest Rank",
            "description": "Recommend latest items to users.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.latestrank.LatestRank --hdfs --training_dbType $appdataDbType$ --training_dbName $appdataDbName$ --training_dbHost $appdataDbHost$ --training_dbPort $appdataDbPort$ --modeldata_dbType $modeldataDbType$ --modeldata_dbName $modeldataDbName$ --modeldata_dbHost $modeldataDbHost$ --modeldata_dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.latestrank.LatestRank --hdfs --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --modelSet false --recommendationTime $recommendationTime$ --evalid $evalid$"
            ],
            "paramorder": [],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users and Items with starttime."
            ],
            "params": {},
            "paramsections": []
        },
        "pdio-knnitembased": {
            "name": "kNN Item Based Collaborative Filtering",
            "description": "This item-based k-NearestNeighbor algorithm predicts user preferences based on previous behaviors of users on similar items.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.KNNItemBased --hdfs --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --measureParam $measureParam$ --priorCountParam $priorCountParam$ --priorCorrelParam $priorCorrelParam$ --minNumRatersParam $minNumRatersParam$ --maxNumRatersParam $maxNumRatersParam$ --minIntersectionParam $minIntersectionParam$ --minNumRatedSimParam $minNumRatedSimParam$ --numRecommendations $numRecommendations$ --unseenOnly $unseenOnly$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.KNNItemBased --hdfs --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --measureParam $measureParam$ --priorCountParam $priorCountParam$ --priorCorrelParam $priorCorrelParam$ --minNumRatersParam $minNumRatersParam$ --maxNumRatersParam $maxNumRatersParam$ --minIntersectionParam $minIntersectionParam$ --minNumRatedSimParam $minNumRatedSimParam$ --numRecommendations $numRecommendations$ --unseenOnly $unseenOnly$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.itemrec.knnitembased.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet false --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "measureParam",
                "priorCountParam",
                "priorCorrelParam",
                "minNumRatersParam",
                "maxNumRatersParam",
                "minIntersectionParam",
                "minNumRatedSimParam",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "measureParam": {
                    "name": "Distance Function",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "defaultvalue": "correl",
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Pearson Correlation Similarity",
                                "value": "correl"
                            },
                            {
                                "name": "Cosine Similarity",
                                "value": "cosine"
                            },
                            {
                                "name": "Jaccard Similarity",
                                "value": "jaccard"
                            }
                        ]
                    }
                },
                "priorCountParam": {
                    "name": "Virtual Count",
                    "description": "Suggested range: 0 to 100.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 20
                },
                "priorCorrelParam": {
                    "name": "Prior Correlation",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0
                },
                "minNumRatersParam": {
                    "name": "Minimum Number of Raters",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "maxNumRatersParam": {
                    "name": "Maximum Number of Raters",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "minIntersectionParam": {
                    "name": "Minimum Intersection",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minNumRatedSimParam": {
                    "name": "Minimum Number of Rated Similar Items",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "priorCountParamMin": {
                    "name": "priorCountParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "priorCountParamMax": {
                    "name": "priorCountParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 30
                },
                "minNumRatersParamMin": {
                    "name": "minNumRatersParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minNumRatersParamMax": {
                    "name": "minNumRatersParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "maxNumRatersParamMin": {
                    "name": "maxNumRatersParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "maxNumRatersParamMax": {
                    "name": "maxNumRatersParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "minIntersectionParamMin": {
                    "name": "minIntersectionParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minIntersectionParamMax": {
                    "name": "minIntersectionParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "minNumRatedSimParamMin": {
                    "name": "minNumRatedSimParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minNumRatedSimParamMax": {
                    "name": "minNumRatedSimParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "priorCorrelParamMin": {
                    "name": "priorCorrelParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0
                },
                "priorCorrelParamMax": {
                    "name": "priorCorrelParamMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Item Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "measureParam"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "subsections": [
                                {
                                    "name": "Regularization",
                                    "sectiontype": "normal",
                                    "description": "Add virtual item pairs that have zero correlation. This helps avoid noise if some item pairs have very few user actions in common.",
                                    "params": [
                                        "priorCountParam",
                                        "priorCorrelParam"
                                    ]
                                },
                                {
                                    "name": "Other Parameters",
                                    "sectiontype": "normal",
                                    "description": "Filters to speed up computation and reduce noise.",
                                    "params": [
                                        "minNumRatersParam",
                                        "maxNumRatersParam",
                                        "minIntersectionParam",
                                        "minNumRatedSimParam"
                                    ]
                                }
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-itembased": {
            "name": "Mahout's Threshold Item Based Collaborative Filtering",
            "description": "Predicts user preferences based on previous behaviors of users on similar items.",
            "batchcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$base$/bin/quiet.sh rm -rf $localTempDir$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$ --recommendationTime $recommendationTime$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$ --recommendationTime $recommendationTime$",
                "$hadoop$ fs -getmerge $dataFilePrefix$recommendItems.csv $localTempDir$recommendItemsM.csv",
                "$hadoop$ fs -copyFromLocal $localTempDir$recommendItemsM.csv $dataFilePrefix$recommendItemsM.csv",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.item.RecommenderJob --input $dataFilePrefix$ratings.csv --itemsFile $dataFilePrefix$recommendItemsM.csv --output $algoFilePrefix$predicted.tsv --tempDir $mahoutTempDir$ --numRecommendations $numRecommendations$ --booleanData $booleanData$ --maxPrefsPerUser $maxPrefsPerUser$ --minPrefsPerUser $minPrefsPerUser$ --maxSimilaritiesPerItem $maxSimilaritiesPerItem$ --maxPrefsPerUserInItemSimilarity $maxPrefsPerUserInItemSimilarity$ --similarityClassname $similarityClassname$ --threshold $threshold$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "offlineevalcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$base$/bin/quiet.sh rm -rf $localTempDir$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$ --recommendationTime $recommendationTime$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$ --recommendationTime $recommendationTime$",
                "$hadoop$ fs -getmerge $dataFilePrefix$recommendItems.csv $localTempDir$recommendItemsM.csv",
                "$hadoop$ fs -copyFromLocal $localTempDir$recommendItemsM.csv $dataFilePrefix$recommendItemsM.csv",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.item.RecommenderJob --input $dataFilePrefix$ratings.csv --itemsFile $dataFilePrefix$recommendItemsM.csv --output $algoFilePrefix$predicted.tsv --tempDir $mahoutTempDir$ --numRecommendations $numRecommendations$ --booleanData $booleanData$ --maxPrefsPerUser $maxPrefsPerUser$ --minPrefsPerUser $minPrefsPerUser$ --maxSimilaritiesPerItem $maxSimilaritiesPerItem$ --maxPrefsPerUserInItemSimilarity $maxPrefsPerUserInItemSimilarity$ --similarityClassname $similarityClassname$ --threshold $threshold$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "paramorder": [
                "booleanData",
                "maxPrefsPerUser",
                "minPrefsPerUser",
                "maxSimilaritiesPerItem",
                "maxPrefsPerUserInItemSimilarity",
                "similarityClassname",
                "threshold",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "booleanData": {
                    "name": "Boolean Data",
                    "description": "Treat input data as having no preference values.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "maxPrefsPerUser": {
                    "name": "Max Num of Preferences per User",
                    "description": "Maximum number of preferences considered per user in final recommendation phase.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "minPrefsPerUser": {
                    "name": "Min Num of Preferences per User",
                    "description": "Ignore users with less preferences than this.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "maxSimilaritiesPerItem": {
                    "name": "Max Num of Similarities per Item",
                    "description": "Maximum number of similarities considered per item.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 100
                },
                "maxPrefsPerUserInItemSimilarity": {
                    "name": "Max Num of Preferences per User in Item Similarity",
                    "description": "Max number of preferences to consider per user in the item similarity computation phase, users with more preferences will be sampled down.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1000
                },
                "similarityClassname": {
                    "name": "Distance Function",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Co-occurrence",
                                "value": "SIMILARITY_COOCCURRENCE"
                            },
                            {
                                "name": "Log-Likelihood",
                                "value": "SIMILARITY_LOGLIKELIHOOD"
                            },
                            {
                                "name": "Tanimoto Coefficient",
                                "value": "SIMILARITY_TANIMOTO_COEFFICIENT"
                            },
                            {
                                "name": "City Block",
                                "value": "SIMILARITY_CITY_BLOCK"
                            },
                            {
                                "name": "Cosine Similarity",
                                "value": "SIMILARITY_COSINE"
                            },
                            {
                                "name": "Pearson Correlation",
                                "value": "SIMILARITY_PEARSON_CORRELATION"
                            },
                            {
                                "name": "Euclidean Distance",
                                "value": "SIMILARITY_EUCLIDEAN_DISTANCE"
                            }
                        ]
                    },
                    "defaultvalue": "SIMILARITY_LOGLIKELIHOOD"
                },
                "threshold": {
                    "name": "Threshold",
                    "description": "Discard item pairs with a similarity value below this.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "thresholdMin": {
                    "name": "thresholdMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "thresholdMax": {
                    "name": "thresholdMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.15
                },
                "maxPrefsPerUserMin": {
                    "name": "maxPrefsPerUserMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "maxPrefsPerUserMax": {
                    "name": "maxPrefsPerUserMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 50
                },
                "minPrefsPerUserMin": {
                    "name": "minPrefsPerUserMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minPrefsPerUserMax": {
                    "name": "minPrefsPerUserMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "maxSimilaritiesPerItemMin": {
                    "name": "maxSimilaritiesPerItemMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 50
                },
                "maxSimilaritiesPerItemMax": {
                    "name": "maxSimilaritiesPerItemMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 150
                },
                "maxPrefsPerUserInItemSimilarityMin": {
                    "name": "maxPrefsPerUserInItemSimilarityMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 500
                },
                "maxPrefsPerUserInItemSimilarityMax": {
                    "name": "maxPrefsPerUserInItemSimilarityMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1500
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Item Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "similarityClassname"
                            ]
                        },
                        {
                            "name": "Advanced Parameters",
                            "sectiontype": "normal",
                            "params": [
                                "booleanData"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "threshold",
                                "maxPrefsPerUser",
                                "minPrefsPerUser",
                                "maxSimilaritiesPerItem",
                                "maxPrefsPerUserInItemSimilarity"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-parallelals": {
            "name": "Mahout's Parallel ALS-WR",
            "description": "Predicts user preferences based on previous behaviors of users.",
            "batchcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJob --input $dataFilePrefix$ratings.csv --output $algoFilePrefix$matrix --tempDir $mahoutTempDir$ --lambda $lambda$ --implicitFeedback $implicitFeedback$ --numFeatures $numFeatures$ --numIterations $numIterations$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.als.RecommenderJob --input $algoFilePrefix$matrix/userRatings --userFeatures $algoFilePrefix$matrix/U --itemFeatures $algoFilePrefix$matrix/M --output $algoFilePrefix$predicted.tsv --tempDir $mahoutTempDir$ --numRecommendations $numRecommendations$ --maxRating 5",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --implicitFeedback $implicitFeedback$"
            ],
            "offlineevalcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJob --input $dataFilePrefix$ratings.csv --output $algoFilePrefix$matrix --tempDir $mahoutTempDir$ --lambda $lambda$ --implicitFeedback $implicitFeedback$ --numFeatures $numFeatures$ --numIterations $numIterations$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.als.RecommenderJob --input $algoFilePrefix$matrix/userRatings --userFeatures $algoFilePrefix$matrix/U --itemFeatures $algoFilePrefix$matrix/M --output $algoFilePrefix$predicted.tsv --tempDir $mahoutTempDir$ --numRecommendations $numRecommendations$ --maxRating 5",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --implicitFeedback $implicitFeedback$"
            ],
            "paramorder": [
                "lambda",
                "implicitFeedback",
                "alpha",
                "numFeatures",
                "numIterations",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "lambda": {
                    "name": "Lambda",
                    "description": "Regularization parameter to avoid overfitting.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.03
                },
                "implicitFeedback": {
                    "name": "Implicit Feedback",
                    "description": "Whether data consists of implicit data.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "alpha": {
                    "name": "Alpha",
                    "description": "Confidence parameter will be ignored if Implicit Feedback is false.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 40
                },
                "numFeatures": {
                    "name": "Number of Factorized Features",
                    "description": "Dimension of the factorized feature space.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "numIterations": {
                    "name": "Number of Iterations",
                    "description": "Number of training iteration.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "lambdaMin": {
                    "name": "lambdaMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "lambdaMax": {
                    "name": "lambdaMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "alphaMin": {
                    "name": "alphaMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "alphaMax": {
                    "name": "alphaMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 50
                },
                "numFeaturesMin": {
                    "name": "numFeaturesMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 2
                },
                "numFeaturesMax": {
                    "name": "numFeaturesMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "numIterationsMin": {
                    "name": "numIterationsMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "numIterationsMax": {
                    "name": "numIterationsMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 20
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "params": [
                        "implicitFeedback"
                    ],
                    "subsections": [
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "lambda",
                                "alpha",
                                "numFeatures",
                                "numIterations"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-knnuserbased": {
            "name": "Mahout's kNN User Based Collaborative Filtering (Non-distributed)",
            "description": "Predicts user preferences based on previous behaviors of users who are the k-nearest neighbors (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.knnuserbased.KNNUserBasedJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --booleanData $booleanData$ --numRecommendations $numRecommendations$ --nearestN $nearestN$ --userSimilarity $userSimilarity$ --weighted $weighted$ --minSimilarity $minSimilarity$ --samplingRate $samplingRate$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.knnuserbased.KNNUserBasedJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --booleanData $booleanData$ --numRecommendations $numRecommendations$ --nearestN $nearestN$ --userSimilarity $userSimilarity$ --weighted $weighted$ --minSimilarity $minSimilarity$ --samplingRate $samplingRate$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "paramorder": [
                "booleanData",
                "nearestN",
                "userSimilarity",
                "weighted",
                "minSimilarity",
                "samplingRate",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "booleanData": {
                    "name": "Boolean Data",
                    "description": "Treat input data as having no preference values.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "nearestN": {
                    "name": "Nearest K",
                    "description": "K-nearest neighbors to a given user.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "userSimilarity": {
                    "name": "User Similarity",
                    "description": "User Similarity Measure.",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "City Block",
                                "value": "CityBlockSimilarity"
                            },
                            {
                                "name": "Euclidean Distance",
                                "value": "EuclideanDistanceSimilarity"
                            },
                            {
                                "name": "Log-Likelihood",
                                "value": "LogLikelihoodSimilarity"
                            },
                            {
                                "name": "Pearson Correlation",
                                "value": "PearsonCorrelationSimilarity"
                            },
                            {
                                "name": "Spearman Correlation",
                                "value": "SpearmanCorrelationSimilarity"
                            },
                            {
                                "name": "Tanimoto Coefficient",
                                "value": "TanimotoCoefficientSimilarity"
                            },
                            {
                                "name": "Uncentered Cosine",
                                "value": "UncenteredCosineSimilarity"
                            }
                        ]
                    },
                    "defaultvalue": "PearsonCorrelationSimilarity"
                },
                "weighted": {
                    "name": "Weighted",
                    "description": "The Similarity score is weighted (only applied to Euclidean Distance, Pearson Correlation, Uncentered Cosine user similarity).",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "minSimilarity": {
                    "name": "Minimal Similarity",
                    "description": "Minimal similarity required for neighbors.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "samplingRate": {
                    "name": "Sampling Rate",
                    "description": "Must be greater > 0 and <= 1. Percentage of users to consider when building neighborhood. Decrease to trade quality for performance.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "nearestNMin": {
                    "name": "nearestNMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "nearestNMax": {
                    "name": "nearestNMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 15
                },
                "minSimilarityMin": {
                    "name": "minSimilarityMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "minSimilarityMax": {
                    "name": "minSimilarityMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.2
                },
                "samplingRateMin": {
                    "name": "samplingRateMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.5
                },
                "samplingRateMax": {
                    "name": "samplingRateMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "userSimilarity"
                            ]
                        },
                        {
                            "name": "Advanced Parameters",
                            "sectiontype": "normal",
                            "params": [
                                "booleanData",
                                "weighted"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "nearestN",
                                "minSimilarity",
                                "samplingRate"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-thresholduserbased": {
            "name": "Mahout's Threshold User Based Collaborative Filtering (Non-distributed)",
            "description": "Predicts user preferences based on previous behaviors of users whose similarity meets or exceeds a certain threshold (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.thresholduserbased.ThresholdUserBasedJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --booleanData $booleanData$ --numRecommendations $numRecommendations$ --threshold $threshold$ --userSimilarity $userSimilarity$ --weighted $weighted$ --samplingRate $samplingRate$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.thresholduserbased.ThresholdUserBasedJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --booleanData $booleanData$ --numRecommendations $numRecommendations$ --threshold $threshold$ --userSimilarity $userSimilarity$ --weighted $weighted$ --samplingRate $samplingRate$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$ --booleanData $booleanData$"
            ],
            "paramorder": [
                "booleanData",
                "threshold",
                "userSimilarity",
                "weighted",
                "samplingRate",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "booleanData": {
                    "name": "Boolean Data",
                    "description": "Treat input data as having no preference values.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "threshold": {
                    "name": "Threshold",
                    "description": "Similarity threshold.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "userSimilarity": {
                    "name": "User Similarity",
                    "description": "User Similarity Measure.",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "City Block",
                                "value": "CityBlockSimilarity"
                            },
                            {
                                "name": "Euclidean Distance",
                                "value": "EuclideanDistanceSimilarity"
                            },
                            {
                                "name": "Log-Likelihood",
                                "value": "LogLikelihoodSimilarity"
                            },
                            {
                                "name": "Pearson Correlation",
                                "value": "PearsonCorrelationSimilarity"
                            },
                            {
                                "name": "Spearman Correlation",
                                "value": "SpearmanCorrelationSimilarity"
                            },
                            {
                                "name": "Tanimoto Coefficient",
                                "value": "TanimotoCoefficientSimilarity"
                            },
                            {
                                "name": "Uncentered Cosine",
                                "value": "UncenteredCosineSimilarity"
                            }
                        ]
                    },
                    "defaultvalue": "PearsonCorrelationSimilarity"
                },
                "weighted": {
                    "name": "Weighted",
                    "description": "The Similarity score is weighted (only applied to Euclidean Distance, Pearson Correlation, Uncentered Cosine user similarity).",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "samplingRate": {
                    "name": "Sampling Rate",
                    "description": "Must be greater > 0 and <= 1. Percentage of users to consider when building neighborhood. Decrease to trade quality for performance.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "thresholdMin": {
                    "name": "thresholdMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "thresholdMax": {
                    "name": "thresholdMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.2
                },
                "samplingRateMin": {
                    "name": "samplingRateMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.5
                },
                "samplingRateMax": {
                    "name": "samplingRateMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "userSimilarity"
                            ]
                        },
                        {
                            "name": "Advanced Parameters",
                            "sectiontype": "normal",
                            "params": [
                                "booleanData",
                                "weighted"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "threshold",
                                "samplingRate"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-slopeone": {
            "name": "Mahout's SlopeOne Rating Based Collaborative Filtering (Non-distributed)",
            "description": "Predicts user preferences based on average difference in preference values between new items and the items for which the user has indicated preferences (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.slopeone.SlopeOneJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --weighting $weighting$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.slopeone.SlopeOneJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --numRecommendations $numRecommendations$ --weighting $weighting$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "weighting",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "weighting": {
                    "name": "Weighting",
                    "description": "Weighted preference difference.",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "No Weighting",
                                "value": "No_Weighting"
                            },
                            {
                                "name": "Count",
                                "value": "Count"
                            },
                            {
                                "name": "Standard Deviation",
                                "value": "Standard_Deviation"
                            }
                        ]
                    },
                    "defaultvalue": "Standard_Deviation"
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Weighting Settings",
                            "sectiontype": "normal",
                            "params": [
                                "weighting"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-alswr": {
            "name": "Mahout's ALS-WR (Non-distributed)",
            "description": "Predict user preferences using matrix factorization (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.alswr.ALSWRJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --lambda $lambda$ --numIterations $numIterations$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.alswr.ALSWRJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --lambda $lambda$ --numIterations $numIterations$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "numFeatures",
                "lambda",
                "numIterations",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "numFeatures": {
                    "name": "Number of Factorized Features",
                    "description": "Dimension of the factorized feature space.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "lambda": {
                    "name": "Lambda",
                    "description": "Regularization param to avoid overfitting.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.03
                },
                "numIterations": {
                    "name": "Number of Iterations",
                    "description": "Number of training iteration.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "numFeaturesMin": {
                    "name": "numFeaturesMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 2
                },
                "numFeaturesMax": {
                    "name": "numFeaturesMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "lambdaMin": {
                    "name": "lambdaMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "lambdaMax": {
                    "name": "lambdaMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "numIterationsMin": {
                    "name": "numIterationsMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "numIterationsMax": {
                    "name": "numIterationsMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 20
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "",
                            "sectiontype": "tuning",
                            "params": [
                                "numFeatures",
                                "lambda",
                                "numIterations"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-svdsgd": {
            "name": "Mahout's SVD-RatingSGD Recommender (Non-distributed)",
            "description": "Predict user preferences using matrix factorization (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.svdsgd.SVDSGDJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --learningRate $learningRate$ --preventOverfitting $preventOverfitting$ --randomNoise $randomNoise$ --numIterations $numIterations$ --learningRateDecay $learningRateDecay$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.svdsgd.SVDSGDJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --learningRate $learningRate$ --preventOverfitting $preventOverfitting$ --randomNoise $randomNoise$ --numIterations $numIterations$ --learningRateDecay $learningRateDecay$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "numFeatures",
                "learningRate",
                "preventOverfitting",
                "randomNoise",
                "numIterations",
                "learningRateDecay",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "numFeatures": {
                    "name": "Number of Factorized Features",
                    "description": "Dimension of the factorized feature space.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "learningRate": {
                    "name": "Learning Rate",
                    "description": "Learning rate (step size).",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "preventOverfitting": {
                    "name": "Prevent Overfitting",
                    "description": "Parameter used to prevent overfitting.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "randomNoise": {
                    "name": "Random Noise",
                    "description": "Standard deviation for random initialization of feature.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "numIterations": {
                    "name": "Number of Iterations",
                    "description": "Number of training iterations.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "learningRateDecay": {
                    "name": "Learning Rate Decay",
                    "description": "Multiplicative decay factor for Learning Rate.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "numFeaturesMin": {
                    "name": "numFeaturesMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 2
                },
                "numFeaturesMax": {
                    "name": "numFeaturesMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "learningRateMin": {
                    "name": "learningRateMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "learningRateMax": {
                    "name": "learningRateMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.05
                },
                "preventOverfittingMin": {
                    "name": "preventOverfittingMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "preventOverfittingMax": {
                    "name": "preventOverfittingMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.5
                },
                "randomNoiseMin": {
                    "name": "randomNoiseMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "randomNoiseMax": {
                    "name": "randomNoiseMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.05
                },
                "numIterationsMin": {
                    "name": "numIterationsMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "numIterationsMax": {
                    "name": "numIterationsMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "learningRateDecayMin": {
                    "name": "learningRateDecayMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "learningRateDecayMax": {
                    "name": "learningRateDecayMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "numFeatures",
                                "learningRate",
                                "preventOverfitting",
                                "randomNoise",
                                "numIterations",
                                "learningRateDecay"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-svdplusplus": {
            "name": "Mahout's SVDPlusPlus Recommender (Non-distributed)",
            "description": "Predict user preferences using matrix factorization (Non-distributed).",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.svdplusplus.SVDPlusPlusJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --learningRate $learningRate$ --preventOverfitting $preventOverfitting$ --randomNoise $randomNoise$ --numIterations $numIterations$ --learningRateDecay $learningRateDecay$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -jar $base$/lib/$mahoutItemrecAlgo$ io.prediction.algorithms.mahout.itemrec.svdplusplus.SVDPlusPlusJob --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --numRecommendations $numRecommendations$ --numFeatures $numFeatures$ --learningRate $learningRate$ --preventOverfitting $preventOverfitting$ --randomNoise $randomNoise$ --numIterations $numIterations$ --learningRateDecay $learningRateDecay$",
                "$hadoop$ jar $base$/lib/$pdioItemrecAlgo$ io.prediction.algorithms.scalding.mahout.itemrec.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --unseenOnly $unseenOnly$ --numRecommendations $numRecommendations$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "numFeatures",
                "learningRate",
                "preventOverfitting",
                "randomNoise",
                "numIterations",
                "learningRateDecay",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemrec",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "numFeatures": {
                    "name": "Number of Factorized Features",
                    "description": "Dimension of the factorized feature space.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "learningRate": {
                    "name": "Learning Rate",
                    "description": "Learning rate (step size).",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "preventOverfitting": {
                    "name": "Prevent Overfitting",
                    "description": "Parameter used to prevent overfitting.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "randomNoise": {
                    "name": "Random Noise",
                    "description": "Standard deviation for random initialization of feature.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "numIterations": {
                    "name": "Number of Iterations",
                    "description": "Number of training iterations.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 3
                },
                "learningRateDecay": {
                    "name": "Learning Rate Decay",
                    "description": "Multiplicative decay factor for Learning Rate.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "numFeaturesMin": {
                    "name": "numFeaturesMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 2
                },
                "numFeaturesMax": {
                    "name": "numFeaturesMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "learningRateMin": {
                    "name": "learningRateMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "learningRateMax": {
                    "name": "learningRateMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.05
                },
                "preventOverfittingMin": {
                    "name": "preventOverfittingMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                },
                "preventOverfittingMax": {
                    "name": "preventOverfittingMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.5
                },
                "randomNoiseMin": {
                    "name": "randomNoiseMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.01
                },
                "randomNoiseMax": {
                    "name": "randomNoiseMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.05
                },
                "numIterationsMin": {
                    "name": "numIterationsMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "numIterationsMax": {
                    "name": "numIterationsMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "learningRateDecayMin": {
                    "name": "learningRateDecayMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "learningRateDecayMax": {
                    "name": "learningRateDecayMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "numFeatures",
                                "learningRate",
                                "preventOverfitting",
                                "randomNoise",
                                "numIterations",
                                "learningRateDecay"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "pdio-itemsimrandomrank": {
            "name": "Random Rank",
            "description": "Predict item similarities randomly.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.randomrank.RandomRank --hdfs --training_dbType $appdataDbType$ --training_dbName $appdataDbName$ --training_dbHost $appdataDbHost$ --training_dbPort $appdataDbPort$ --modeldata_dbType $modeldataDbType$ --modeldata_dbName $modeldataDbName$ --modeldata_dbHost $modeldataDbHost$ --modeldata_dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numSimilarItems $numSimilarItems$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.randomrank.RandomRank --hdfs --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numSimilarItems $numSimilarItems$ --modelSet false --evalid $evalid$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [],
            "engineinfoid": "itemsim",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Items."
            ],
            "params": {},
            "paramsections": []
        },
        "pdio-itemsimlatestrank": {
            "name": "Latest Rank",
            "description": "Consider latest items as most similar.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.latestrank.LatestRank --hdfs --training_dbType $appdataDbType$ --training_dbName $appdataDbName$ --training_dbHost $appdataDbHost$ --training_dbPort $appdataDbPort$ --modeldata_dbType $modeldataDbType$ --modeldata_dbName $modeldataDbName$ --modeldata_dbHost $modeldataDbHost$ --modeldata_dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numSimilarItems $numSimilarItems$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.latestrank.LatestRank --hdfs --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --numSimilarItems $numSimilarItems$ --modelSet false --evalid $evalid$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [],
            "engineinfoid": "itemsim",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Items with starttime."
            ],
            "params": {},
            "paramsections": []
        },
        "pdio-itemsimcf": {
            "name": "Item Similarity Collaborative Filtering",
            "description": "This algorithm predicts similar items which the user may also like.",
            "batchcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.ItemSimilarity --hdfs --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --measureParam $measureParam$ --priorCountParam $priorCountParam$ --priorCorrelParam $priorCorrelParam$ --minNumRatersParam $minNumRatersParam$ --maxNumRatersParam $maxNumRatersParam$ --minIntersectionParam $minIntersectionParam$ --numSimilarItems $numSimilarItems$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.ItemSimilarity --hdfs --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --measureParam $measureParam$ --priorCountParam $priorCountParam$ --priorCorrelParam $priorCorrelParam$ --minNumRatersParam $minNumRatersParam$ --maxNumRatersParam $maxNumRatersParam$ --minIntersectionParam $minIntersectionParam$ --numSimilarItems $numSimilarItems$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.itemsim.itemsimcf.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet false --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "measureParam",
                "priorCountParam",
                "priorCorrelParam",
                "minNumRatersParam",
                "maxNumRatersParam",
                "minIntersectionParam",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemsim",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "measureParam": {
                    "name": "Distance Function",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Pearson Correlation Similarity",
                                "value": "correl"
                            },
                            {
                                "name": "Cosine Similarity",
                                "value": "cosine"
                            },
                            {
                                "name": "Jaccard Similarity",
                                "value": "jaccard"
                            }
                        ]
                    },
                    "defaultvalue": "correl"
                },
                "priorCountParam": {
                    "name": "Virtual Count",
                    "description": "Suggested range: 0 to 100.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 20
                },
                "priorCorrelParam": {
                    "name": "Prior Correlation",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0
                },
                "minNumRatersParam": {
                    "name": "Minimum Number of Raters",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "maxNumRatersParam": {
                    "name": "Maximum Number of Raters",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "minIntersectionParam": {
                    "name": "Minimum Intersection",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "priorCountParamMin": {
                    "name": "priorCountParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10
                },
                "priorCountParamMax": {
                    "name": "priorCountParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 30
                },
                "minNumRatersParamMin": {
                    "name": "minNumRatersParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minNumRatersParamMax": {
                    "name": "minNumRatersParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "maxNumRatersParamMin": {
                    "name": "maxNumRatersParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "maxNumRatersParamMax": {
                    "name": "maxNumRatersParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 10000
                },
                "minIntersectionParamMin": {
                    "name": "minIntersectionParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minIntersectionParamMax": {
                    "name": "minIntersectionParamMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                },
                "priorCorrelParamMin": {
                    "name": "priorCorrelParamMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0
                },
                "priorCorrelParamMax": {
                    "name": "priorCorrelParamMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.1
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Item Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "measureParam"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "subsections": [
                                {
                                    "name": "Regularization",
                                    "sectiontype": "normal",
                                    "description": "Add virtual item pairs that have zero correlation. This helps avoid noise if some item pairs have very few user actions in common.",
                                    "params": [
                                        "priorCountParam",
                                        "priorCorrelParam"
                                    ]
                                },
                                {
                                    "name": "Other Parameters",
                                    "sectiontype": "normal",
                                    "description": "Filters to speed up computation and reduce noise.",
                                    "params": [
                                        "minNumRatersParam",
                                        "maxNumRatersParam",
                                        "minIntersectionParam"
                                    ]
                                }
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        },
        "mahout-itemsimcf": {
            "name": "Mahout's Item Similarity Collaborative Filtering",
            "description": "This algorithm predicts similar items which the user may also like.",
            "batchcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.DataCopy --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.DataPreparator --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.similarity.item.ItemSimilarityJob --input $dataFilePrefix$ratings.csv --output $algoFilePrefix$similarities.tsv --tempDir $mahoutTempDir$ --maxSimilaritiesPerItem $numSimilarItems$ --booleanData $booleanData$ --maxPrefsPerUser $maxPrefsPerUser$ --minPrefsPerUser $minPrefsPerUser$ --similarityClassname $similarityClassname$ --threshold $threshold$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.ModelConstructor --hdfs --dbType $modeldataDbType$ --dbName $modeldataDbName$ --dbHost $modeldataDbHost$ --dbPort $modeldataDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --modelSet $modelset$ --numSimilarItems $numSimilarItems$ --recommendationTime $recommendationTime$"
            ],
            "offlineevalcommands": [
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $mahoutTempDir$",
                "$base$/bin/quiet.sh $hadoop$ fs -rmr $algoDir$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.DataCopy --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.DataPreparator --hdfs --dbType $appdataTrainingDbType$ --dbName $appdataTrainingDbName$ --dbHost $appdataTrainingDbHost$ --dbPort $appdataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ $itypes$ --viewParam $viewParam$ --likeParam $likeParam$ --dislikeParam $dislikeParam$ --conversionParam $conversionParam$ --conflictParam $conflictParam$",
                "$hadoop$ jar $mahoutCoreJob$ org.apache.mahout.cf.taste.hadoop.similarity.item.ItemSimilarityJob --input $dataFilePrefix$ratings.csv --output $algoFilePrefix$similarities.tsv --tempDir $mahoutTempDir$ --maxSimilaritiesPerItem $numSimilarItems$ --booleanData $booleanData$ --maxPrefsPerUser $maxPrefsPerUser$ --minPrefsPerUser $minPrefsPerUser$ --similarityClassname $similarityClassname$ --threshold $threshold$",
                "$hadoop$ jar $base$/lib/$pdioItemsimAlgo$ io.prediction.algorithms.scalding.mahout.itemsim.ModelConstructor --hdfs --dbType $modeldataTrainingDbType$ --dbName $modeldataTrainingDbName$ --dbHost $modeldataTrainingDbHost$ --dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --algoid $algoid$ --evalid $evalid$ --modelSet $modelset$ --numSimilarItems $numSimilarItems$ --recommendationTime $recommendationTime$"
            ],
            "paramorder": [
                "booleanData",
                "maxPrefsPerUser",
                "minPrefsPerUser",
                "similarityClassname",
                "threshold",
                "viewParam",
                "likeParam",
                "dislikeParam",
                "conversionParam",
                "conflictParam"
            ],
            "engineinfoid": "itemsim",
            "techreq": [
                "Hadoop"
            ],
            "datareq": [
                "Users, Items, and U2I Actions such as Like, Conversion and Rate."
            ],
            "params": {
                "booleanData": {
                    "name": "Boolean Data",
                    "description": "Treat input data as having no preference values.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "True",
                                "value": "true"
                            },
                            {
                                "name": "False",
                                "value": "false"
                            }
                        ]
                    },
                    "defaultvalue": false
                },
                "maxPrefsPerUser": {
                    "name": "Max Num of Preferences per User",
                    "description": "Maximum number of preferences considered per user in final recommendation phase.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1000
                },
                "minPrefsPerUser": {
                    "name": "Min Num of Preferences per User",
                    "description": "Ignore users with less preferences than this.",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "similarityClassname": {
                    "name": "Distance Function",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Co-occurrence",
                                "value": "SIMILARITY_COOCCURRENCE"
                            },
                            {
                                "name": "Log-Likelihood",
                                "value": "SIMILARITY_LOGLIKELIHOOD"
                            },
                            {
                                "name": "Tanimoto Coefficient",
                                "value": "SIMILARITY_TANIMOTO_COEFFICIENT"
                            },
                            {
                                "name": "City Block",
                                "value": "SIMILARITY_CITY_BLOCK"
                            },
                            {
                                "name": "Cosine Similarity",
                                "value": "SIMILARITY_COSINE"
                            },
                            {
                                "name": "Pearson Correlation",
                                "value": "SIMILARITY_PEARSON_CORRELATION"
                            },
                            {
                                "name": "Euclidean Distance",
                                "value": "SIMILARITY_EUCLIDEAN_DISTANCE"
                            }
                        ]
                    },
                    "defaultvalue": "SIMILARITY_LOGLIKELIHOOD"
                },
                "threshold": {
                    "name": "Threshold",
                    "description": "Discard item pairs with a similarity value below this.",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "viewParam": {
                    "name": "View Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "3"
                },
                "likeParam": {
                    "name": "Like Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "5"
                },
                "dislikeParam": {
                    "name": "Dislike Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "1"
                },
                "conversionParam": {
                    "name": "Conversion Score",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "1",
                                "value": "1"
                            },
                            {
                                "name": "2",
                                "value": "2"
                            },
                            {
                                "name": "3",
                                "value": "3"
                            },
                            {
                                "name": "4",
                                "value": "4"
                            },
                            {
                                "name": "5",
                                "value": "5"
                            },
                            {
                                "name": "Ignore",
                                "value": "ignore"
                            }
                        ]
                    },
                    "defaultvalue": "4"
                },
                "conflictParam": {
                    "name": "Override",
                    "description": "",
                    "constraint": {
                        "paramtype": "string"
                    },
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Use the latest action",
                                "value": "latest"
                            },
                            {
                                "name": "Use the highest preference score one",
                                "value": "highest"
                            },
                            {
                                "name": "Use the lowest preference score one",
                                "value": "lowest"
                            }
                        ]
                    },
                    "defaultvalue": "latest"
                },
                "thresholdMin": {
                    "name": "thresholdMin",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5e-324
                },
                "thresholdMax": {
                    "name": "thresholdMax",
                    "constraint": {
                        "paramtype": "double"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 0.15
                },
                "maxPrefsPerUserMin": {
                    "name": "maxPrefsPerUserMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 500
                },
                "maxPrefsPerUserMax": {
                    "name": "maxPrefsPerUserMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1500
                },
                "minPrefsPerUserMin": {
                    "name": "minPrefsPerUserMin",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 1
                },
                "minPrefsPerUserMax": {
                    "name": "minPrefsPerUserMax",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "ui": {
                        "uitype": "text"
                    },
                    "defaultvalue": 5
                }
            },
            "paramsections": [
                {
                    "name": "Parameter Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "Item Similarity Measurement",
                            "sectiontype": "normal",
                            "params": [
                                "similarityClassname"
                            ]
                        },
                        {
                            "name": "Advanced Parameters",
                            "sectiontype": "normal",
                            "params": [
                                "booleanData"
                            ]
                        },
                        {
                            "name": "Numeric Parameters",
                            "sectiontype": "tuning",
                            "params": [
                                "threshold",
                                "maxPrefsPerUser",
                                "minPrefsPerUser"
                            ]
                        }
                    ]
                },
                {
                    "name": "User Actions Representation Settings",
                    "sectiontype": "normal",
                    "subsections": [
                        {
                            "name": "User Action Scores",
                            "sectiontype": "normal",
                            "description": "Define the preference score represented by each user action from 1 to 5. 5 is the most preferred, 1 is the least preferred. 3 is neutral.",
                            "params": [
                                "viewParam",
                                "likeParam",
                                "dislikeParam",
                                "conversionParam"
                            ]
                        },
                        {
                            "name": "Overriding",
                            "sectiontype": "normal",
                            "description": "When there are conflicting actions, e.g. a user gives an item a rating 5 but later dislikes it, determine which action will be considered as final preference.",
                            "params": [
                                "conflictParam"
                            ]
                        }
                    ]
                }
            ]
        }
    },
    "offlineevalsplitterinfos": {
        "trainingtestsplit": {
            "name": "Training/Test Data Splitter With Time Order Option",
            "description": "Split data into training, validation and test sets",
            "engineinfoids": [
                "itemrec", "itemsim"
            ],
            "commands": [
                "java -jar $base$/lib/$pdioCommonsU2ITrainingTestSplit$ --hadoop $hadoop$ --pdioEvalJar $base$/lib/$pdioCommonsEval$ --sequenceNum $iteration$ --hdfs --dbType $appdataDbType$ --dbName $appdataDbName$ --dbHost $appdataDbHost$ --dbPort $appdataDbPort$ --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --validation_dbType $appdataValidationDbType$ --validation_dbName $appdataValidationDbName$ --validation_dbHost $appdataValidationDbHost$ --validation_dbPort $appdataValidationDbPort$ --test_dbType $appdataTestDbType$ --test_dbName $appdataTestDbName$ --test_dbHost $appdataTestDbHost$ --test_dbPort $appdataTestDbPort$ --hdfsRoot $hdfsRoot$ --localTempRoot $localTempRoot$ --appid $appid$ --engineid $engineid$ --evalid $evalid$ $itypes$ --trainingPercent $trainingPercent$ --validationPercent $validationPercent$ --testPercent $testPercent$ --timeorder $timeorder$"
            ],
            "params": {
                "timeorder": {
                    "name": "Data Selection",
                    "description": "Random with Time Order means that data in Test Set is always newer than those in Train Set.",
                    "constraint": {
                        "paramtype": "boolean"
                    },
                    "defaultvalue": false,
                    "ui": {
                        "uitype": "selection",
                        "selections": [
                            {
                                "name": "Random Sampling",
                                "value": "false"
                            },
                            {
                                "name": "Random with Time Order",
                                "value": "true"
                            }
                        ]
                    }
                }
            },
            "paramsections": [
                {
                    "name": "Parameters",
                    "sectiontype": "normal",
                    "description": "",
                    "params": [
                        "timeorder"
                    ]
                }
            ],
            "paramorder": [
                "timeorder"
            ]
        }
    },
    "offlineevalmetricinfos": {
        "map_k": {
            "name": "MAP@k",
            "description": "Mean Average Precision",
            "engineinfoids": [
                "itemrec"
            ],
            "commands": [
                "$hadoop$ jar $base$/lib/$pdioItemrecEval$ io.prediction.metrics.scalding.itemrec.map.MAPAtKDataPreparator --hdfs --test_dbType $appdataTestDbType$ --test_dbName $appdataTestDbName$ --test_dbHost $appdataTestDbHost$ --test_dbPort $appdataTestDbPort$ --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --evalid $evalid$ --metricid $metricid$ --algoid $algoid$ --kParam $kParam$ --goalParam $goalParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -Devalid=$evalid$ -Dalgoid=$algoid$ -Dk=$kParam$ -Dmetricid=$metricid$ -Dhdfsroot=$hdfsRoot$ -jar $base$/lib/$pdioItemrecTopK$",
                "$hadoop$ jar $base$/lib/$pdioItemrecEval$ io.prediction.metrics.scalding.itemrec.map.MAPAtK --hdfs --dbType $settingsDbType$ --dbName $settingsDbName$ --dbHost $settingsDbHost$ --dbPort $settingsDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --evalid $evalid$ --metricid $metricid$ --algoid $algoid$ --iteration $iteration$ --splitset $splitset$ --kParam $kParam$"
            ],
            "params": {
                "kParam": {
                    "name": "k",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 20,
                    "ui": {
                        "uitype": "text"
                    }
                }
            },
            "paramsections": [
                {
                    "name": "Parameters",
                    "sectiontype": "normal",
                    "description": "",
                    "params": [
                        "kParam"
                    ]
                }
            ],
            "paramorder": [
                "kParam"
            ]
        },
        "ismap_k": {
            "name": "ISMAP@k",
            "description": "Item Similarity Mean Average Precision at k",
            "engineinfoids": [
                "itemsim"
            ],
            "commands": [
                "$hadoop$ jar $base$/lib/$pdioItemsimEval$ io.prediction.metrics.scalding.itemsim.ismap.ISMAPAtKDataPreparator --hdfs --test_dbType $appdataTestDbType$ --test_dbName $appdataTestDbName$ --test_dbHost $appdataTestDbHost$ --test_dbPort $appdataTestDbPort$ --training_dbType $appdataTrainingDbType$ --training_dbName $appdataTrainingDbName$ --training_dbHost $appdataTrainingDbHost$ --training_dbPort $appdataTrainingDbPort$ --modeldata_dbType $modeldataTrainingDbType$ --modeldata_dbName $modeldataTrainingDbName$ --modeldata_dbHost $modeldataTrainingDbHost$ --modeldata_dbPort $modeldataTrainingDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --evalid $evalid$ --metricid $metricid$ --algoid $algoid$ --kParam $kParam$ --goalParam $goalParam$",
                "java -Dio.prediction.base=$base$ $configFile$ -Devalid=$evalid$ -Dalgoid=$algoid$ -Dk=$kParam$ -Dmetricid=$metricid$ -Dhdfsroot=$hdfsRoot$ -jar $base$/lib/$pdioItemsimTopK$",
                "$hadoop$ jar $base$/lib/$pdioItemsimEval$ io.prediction.metrics.scalding.itemsim.ismap.ISMAPAtK --hdfs --dbType $settingsDbType$ --dbName $settingsDbName$ --dbHost $settingsDbHost$ --dbPort $settingsDbPort$ --hdfsRoot $hdfsRoot$ --appid $appid$ --engineid $engineid$ --evalid $evalid$ --metricid $metricid$ --algoid $algoid$ --iteration $iteration$ --splitset $splitset$ --kParam $kParam$"
            ],
            "params": {
                "kParam": {
                    "name": "k",
                    "description": "",
                    "constraint": {
                        "paramtype": "integer"
                    },
                    "defaultvalue": 20,
                    "ui": {
                        "uitype": "text"
                    }
                }
            },
            "paramsections": [
                {
                    "name": "Parameters",
                    "sectiontype": "normal",
                    "description": "",
                    "params": [
                        "kParam"
                    ]
                }
            ],
            "paramorder": [
                "kParam"
            ]
        }
    },
    "paramgeninfos": {
        "random": {
            "name": "Random Search",
            "description": "Random search within specified interval",
            "commands": [
                "java -Dio.prediction.base=$base$ $configFile$ -Devalids=$evalids$ -Dalgoid=$algoid$ -Dloop=$loop$ -Dparamsets=$paramsets$ -jar $base$/lib/$pdioCommonsParamGen$"
            ],
            "paramorder": [],
            "paramnames": {},
            "paramdescription": {},
            "paramdefaults": {}
        }
    }
}