Class ChunkerCrossValidator

java.lang.Object

opennlp.tools.chunker.ChunkerCrossValidator

public class ChunkerCrossValidator
extends Object

Cross validator for Chunker.

Constructor Summary

Constructors

Constructor	Description
ChunkerCrossValidator(String languageCode, opennlp.tools.util.TrainingParameters params, ChunkerFactory factory, opennlp.tools.chunker.ChunkerEvaluationMonitor... listeners)	Initializes a ChunkerCrossValidator instance via given parameters.

Method Summary

Modifier and Type	Method	Description
void	evaluate(opennlp.tools.util.ObjectStream<opennlp.tools.chunker.ChunkSample> samples, int nFolds)	Starts the evaluation.
opennlp.tools.util.eval.FMeasure	getFMeasure()

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ChunkerCrossValidator

public ChunkerCrossValidator(String languageCode,
 opennlp.tools.util.TrainingParameters params,
 ChunkerFactory factory,
 opennlp.tools.chunker.ChunkerEvaluationMonitor... listeners)

Initializes a ChunkerCrossValidator instance via given parameters.

Parameters:

languageCode - An ISO conform language code.

params - The TrainingParameters for the context of cross validation.

factory - The ChunkerFactory for creating related objects.

listeners - the evaluation listeners.

Method Details

evaluate

public void evaluate(opennlp.tools.util.ObjectStream<opennlp.tools.chunker.ChunkSample> samples,
 int nFolds)
              throws IOException

Starts the evaluation.

Parameters:

samples - The ObjectStream of samples to train and test with.

nFolds - Number of folds. It must be greater than zero.

Throws:

IOException - Thrown if IO errors occurred.

getFMeasure

public opennlp.tools.util.eval.FMeasure getFMeasure()