examples/scala-parallel-recommendation/customize-data-prep/engine.json

{
  "id": "default",
  "description": "Default settings",
  "engineFactory": "org.apache.predictionio.examples.recommendation.RecommendationEngine",
  "datasource": {
    "params" : {
      "appName": "MyApp1"
    }
  },
  "preparator": {
    "params": {
      "filepath": "./data/sample_not_train_data.txt"
    }
  },
  "algorithms": [
    {
      "name": "als",
      "params": {
        "rank": 10,
        "numIterations": 20,
        "lambda": 0.01,
        "seed": 3
      }
    }
  ]
}