| Class | Description | 
|---|---|
| Algo | Enum to select the algorithm for the decision tree | 
| BoostingStrategy | Configuration options for  GradientBoostedTrees. | 
| EnsembleCombiningStrategy | Enum to select ensemble combining strategy for base learners | 
| FeatureType | Enum to describe whether a feature is "continuous" or "categorical" | 
| QuantileStrategy | Enum for selecting the quantile calculation strategy | 
| Strategy | Stores all the configuration options for tree construction
 param:  algo  Learning goal. |