  {
  "id": "default",
  "description": "Default settings",
  "engineFactory": "org.template.textclassification.TextClassificationEngine",
  "datasource": {
    "params": {
      "appName": "MyTextApp"
    }
  },
  "preparator": {
    "params": {
      "nGram": 2,
      "numFeatures": 15000
    }
  },
  "algorithms": [
    {
      "name": "nb",
      "params": {
        "lambda": 0.25
      }
    }
  ]
}