See: Description
| Class | Description | 
|---|---|
| Estimator<M extends Model<M>> | :: DeveloperApi ::
 Abstract class for estimators that fit models to data. | 
| Model<M extends Model<M>> | :: DeveloperApi ::
 A fitted model, i.e., a  Transformerproduced by anEstimator. | 
| Pipeline | A simple pipeline, which acts as an estimator. | 
| Pipeline.SharedReadWrite$ | |
| PipelineModel | Represents a fitted pipeline. | 
| PipelineStage | :: DeveloperApi ::
 A stage in a pipeline, either an  Estimatoror aTransformer. | 
| PredictionModel<FeaturesType,M extends PredictionModel<FeaturesType,M>> | :: DeveloperApi ::
 Abstraction for a model for prediction tasks (regression and classification). | 
| Predictor<FeaturesType,Learner extends Predictor<FeaturesType,Learner,M>,M extends PredictionModel<FeaturesType,M>> | :: DeveloperApi ::
 Abstraction for prediction problems (regression and classification). | 
| Transformer | :: DeveloperApi ::
 Abstract class for transformers that transform one dataset into another. | 
| UnaryTransformer<IN,OUT,T extends UnaryTransformer<IN,OUT,T>> | :: DeveloperApi ::
 Abstract class for transformers that take one input column, apply transformation, and output the
 result as a new column. |