examples/scala-parallel-classification/custom-attributes/engine.json

{
  "id": "default",
  "description": "Default settings",
  "engineFactory": "com.test1.ClassificationEngine",
  "datasource": {
    "params": {
      "appId": 1
    }
  },
  "algorithms": [
    {
      "name": "randomforest",
      "params": {
        "numClasses": 3,
        "numTrees": 5,
        "featureSubsetStrategy": "auto",
        "impurity": "gini",
        "maxDepth": 4,
        "maxBins": 100
      }
    }
  ]
}