Package opennlp.tools.doccat

Klasse DoccatCrossValidator

java.lang.Object

opennlp.tools.doccat.DoccatCrossValidator

public class DoccatCrossValidator
extends Object

Cross validator for DocumentCategorizer.

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
DoccatCrossValidator(String languageCode, TrainingParameters mlParams, DoccatFactory factory, DoccatEvaluationMonitor... listeners)	Instantiates a DoccatCrossValidator with the given generators.

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
void	evaluate(ObjectStream<DocumentSample> samples, int nFolds)	Starts the evaluation.
double	getDocumentAccuracy()
long	getDocumentCount()

Von Klasse geerbte Methoden java.lang.Object

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

Konstruktordetails

DoccatCrossValidator

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

Instantiates a DoccatCrossValidator with the given generators.

Parameter:

languageCode - An ISO conform language code.

mlParams - The TrainingParameters for the context of cross validation.

factory - The DoccatFactory for creating related objects.

listeners - the evaluation listeners.

Methodendetails

evaluate

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

Starts the evaluation.

Parameter:

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

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

Löst aus:

IOException - Thrown if IO errors occurred.

getDocumentAccuracy

public double getDocumentAccuracy()

Gibt zurück:

Retrieves the accuracy for all iterations.

getDocumentCount

public long getDocumentCount()

Gibt zurück:

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.