eus.ixa.ixa.pipe.lemma

Class LemmatizerEvaluator

java.lang.Object

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

eus.ixa.ixa.pipe.lemma.LemmatizerEvaluator

public class LemmatizerEvaluator
extends opennlp.tools.util.eval.Evaluator<LemmaSample>

The LemmatizerEvaluator measures the performance of the given Lemmatizer with the provided reference LemmaSamples.

Constructor Summary

Constructors

Constructor and Description
LemmatizerEvaluator(Lemmatizer aLemmatizer, LemmatizerEvaluationMonitor... 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.
protected LemmaSample	processSample(LemmaSample reference) Evaluates the given reference LemmaSample object.
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

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LemmatizerEvaluator

public LemmatizerEvaluator(Lemmatizer aLemmatizer,
                           LemmatizerEvaluationMonitor... listeners)

Initializes the current instance.

Parameters:

aLemmatizer - a lemmatizer

listeners - an array of evaluation listeners

Method Detail

processSample

protected LemmaSample processSample(LemmaSample reference)

Evaluates the given reference LemmaSample object. This is done by tagging the sentence from the reference LemmaSample with the Lemmatizer. The tags are then used to update the word accuracy score.

Specified by:

processSample in class opennlp.tools.util.eval.Evaluator<LemmaSample>

Parameters:

reference - the reference LemmaSample.

Returns:

the predicted LemmaSample.

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 String toString()

Represents this objects as human readable String.

Overrides:

toString in class Object