Package opennlp.tools.langdetect

Class LanguageDetectorEvaluator

java.lang.Object

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

opennlp.tools.langdetect.LanguageDetectorEvaluator

public class LanguageDetectorEvaluator
extends Evaluator<LanguageSample>

The LanguageDetectorEvaluator measures the performance of the given LanguageDetector with the provided reference LanguageSamples.

See Also:

• LanguageDetector
• LanguageSample

Constructor Summary

Constructors

Constructor	Description
LanguageDetectorEvaluator(LanguageDetector langDetect, LanguageDetectorEvaluationMonitor... listeners)	Initializes an instance to evaluate a LanguageDetector.

Method Summary

Modifier and Type	Method	Description
double	getAccuracy()
long	getDocumentCount()
LanguageSample	processSample(LanguageSample sample)	Evaluates the given reference LanguageSample object.
String	toString()	Represents this object 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 Details

LanguageDetectorEvaluator

public LanguageDetectorEvaluator(LanguageDetector langDetect,
 LanguageDetectorEvaluationMonitor... listeners)

Initializes an instance to evaluate a LanguageDetector.

Parameters:

langDetect - the LanguageDetector to evaluate.

listeners - the evaluation listeners.

Method Details

processSample

public LanguageSample processSample(LanguageSample sample)

Evaluates the given reference LanguageSample object. This is achieved by categorizing the document of the provided LanguageSample. The detected language is then used to calculate and update the score.

Parameters:

sample - the reference LanguageSample.

Returns:

The processed LanguageSample.

getAccuracy

public double getAccuracy()

Returns:

Retrieves the accuracy of provided DocumentCategorizer. Here: accuracy = correctly categorized documents / total documents.

getDocumentCount

public long getDocumentCount()

toString

public String toString()

Represents this object as human-readable String.

Overrides:

toString in class Object