opennlp.tools.postag

Class POSEvaluator

java.lang.Object

opennlp.tools.util.eval.Evaluator<POSSample>

opennlp.tools.postag.POSEvaluator

public class POSEvaluator
extends Evaluator<POSSample>

The POSEvaluator measures the performance of the given POSTagger with the provided reference POSSamples.

Constructor Summary

Constructors

Constructor and Description
POSEvaluator(POSTagger tagger, POSTaggerEvaluationMonitor... listeners) Initializes the current instance.

Method Summary

Modifier and Type	Method and Description
double	getWordAccuracy() Retrieves the word accuracy.
long	getWordCount() Retrieves the total number of words considered in the evaluation.
java.lang.String	toString() Represents this objects as human readable String.

Methods inherited from class opennlp.tools.util.eval.Evaluator

evaluate, evaluateSample

Methods inherited from class java.lang.Object

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

Constructor Detail

POSEvaluator

public POSEvaluator(POSTagger tagger,
                    POSTaggerEvaluationMonitor... listeners)

Initializes the current instance.

Parameters:

tagger -

listeners - an array of evaluation listeners

Method Detail

getWordAccuracy

public double getWordAccuracy()

Retrieves the word accuracy. This is defined as: word accuracy = correctly detected tags / total words

Returns:

the word accuracy

getWordCount

public long getWordCount()

Retrieves the total number of words considered in the evaluation.

Returns:

the word count

toString

public java.lang.String toString()

Represents this objects as human readable String.

Overrides:

toString in class java.lang.Object