| Interface | Description | 
|---|---|
| EvaluationMonitor<T> | 
| Class | Description | 
|---|---|
| CrossValidationPartitioner<E> | Provides access to training and test partitions for n-fold cross validation. | 
| CrossValidationPartitioner.TrainingSampleStream<E> | The  TrainingSampleStreamwhich iterates over
 all training elements. | 
| Evaluator<T> | The  Evaluatoris an abstract base class for evaluators. | 
| FMeasure | The  FMeasureis an utility class for evaluators
 which measure precision, recall and the resulting f-measure. | 
| Mean | Calculates the arithmetic mean of values
 added with the  Mean.add(double)method. | 
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