opennlp.tools.doccat

Class DoccatCrossValidator

java.lang.Object

opennlp.tools.doccat.DoccatCrossValidator

public class DoccatCrossValidator
extends Object

Cross validator for document categorization

Constructor Summary

Constructors

Constructor and Description
DoccatCrossValidator(String languageCode, TrainingParameters mlParams, DoccatFactory factory, DoccatEvaluationMonitor... listeners) Creates a DoccatCrossValidator with the given FeatureGenerators.

Method Summary

Modifier and Type	Method and Description
void	evaluate(ObjectStream<DocumentSample> samples, int nFolds) Starts the evaluation.
double	getDocumentAccuracy() Retrieves the accuracy for all iterations.
long	getDocumentCount() Retrieves the number of words which where validated over all iterations.

Methods inherited from class java.lang.Object

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

Constructor Detail

DoccatCrossValidator

public DoccatCrossValidator(String languageCode,
                            TrainingParameters mlParams,
                            DoccatFactory factory,
                            DoccatEvaluationMonitor... listeners)

Creates a DoccatCrossValidator with the given FeatureGenerators.

Method Detail

evaluate

public void evaluate(ObjectStream<DocumentSample> samples,
                     int nFolds)
              throws IOException

Starts the evaluation.

Parameters:

samples - the data to train and test

nFolds - number of folds

Throws:

IOException

getDocumentAccuracy

public double getDocumentAccuracy()

Retrieves the accuracy for all iterations.

Returns:

the word accuracy

getDocumentCount

public long getDocumentCount()

Retrieves the number of words which where validated over all iterations. The result is the amount of folds multiplied by the total number of words.

Returns:

the word count