Package opennlp.tools.namefind

Class TokenNameFinderCrossValidator

java.lang.Object

opennlp.tools.namefind.TokenNameFinderCrossValidator

public class TokenNameFinderCrossValidator
extends Object

Cross validator for TokenNameFinder.

Constructor Summary

Constructors

Constructor	Description
TokenNameFinderCrossValidator(String languageCode, String type, TrainingParameters trainParams, byte[] featureGeneratorBytes, Map<String,Object> resources, TokenNameFinderEvaluationMonitor... listeners)	Initializes a TokenNameFinderCrossValidator with the given parameters.
TokenNameFinderCrossValidator(String languageCode, String type, TrainingParameters params, byte[] featureGeneratorBytes, Map<String,Object> resources, SequenceCodec<String> codec, TokenNameFinderEvaluationMonitor... listeners)	Initializes a TokenNameFinderCrossValidator with the given parameters.
TokenNameFinderCrossValidator(String languageCode, String type, TrainingParameters params, TokenNameFinderFactory factory, TokenNameFinderEvaluationMonitor... listeners)	Initializes a TokenNameFinderCrossValidator with the given parameters.

Method Summary

Modifier and Type	Method	Description
void	evaluate(ObjectStream<NameSample> samples, int nFolds)	Starts the evaluation.
FMeasure	getFMeasure()

Methods inherited from class java.lang.Object

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

Constructor Details

TokenNameFinderCrossValidator

public TokenNameFinderCrossValidator(String languageCode,
 String type,
 TrainingParameters params,
 byte[] featureGeneratorBytes,
 Map<String,Object> resources,
 SequenceCodec<String> codec,
 TokenNameFinderEvaluationMonitor... listeners)

Initializes a TokenNameFinderCrossValidator with the given parameters.

Parameters:

languageCode - The ISO conform language code.

type - null or an override type for all types in the training data.

featureGeneratorBytes - The byte[] representing the feature generator descriptor.

resources - Additional resources in a mapping.

codec - The SequenceCodec to use.

params - The TrainingParameters for the context of cross validation.

listeners - the evaluation listeners.

TokenNameFinderCrossValidator

public TokenNameFinderCrossValidator(String languageCode,
 String type,
 TrainingParameters trainParams,
 byte[] featureGeneratorBytes,
 Map<String,Object> resources,
 TokenNameFinderEvaluationMonitor... listeners)

Initializes a TokenNameFinderCrossValidator with the given parameters.

Parameters:

languageCode - The ISO conform language code.

type - null or an override type for all types in the training data.

featureGeneratorBytes - The byte[] representing the feature generator descriptor.

resources - Additional resources in a mapping.

listeners - the evaluation listeners.

TokenNameFinderCrossValidator

public TokenNameFinderCrossValidator(String languageCode,
 String type,
 TrainingParameters params,
 TokenNameFinderFactory factory,
 TokenNameFinderEvaluationMonitor... listeners)

Initializes a TokenNameFinderCrossValidator with the given parameters.

Parameters:

languageCode - The ISO conform language code.

type - null or an override type for all types in the training data.

params - The TrainingParameters for the context of cross validation.

factory - The TokenNameFinderFactory for creating related objects.

listeners - the evaluation listeners.

Method Details

evaluate

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

Starts the evaluation.

Note: The name samples need to be grouped on a document basis.

Parameters:

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

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

Throws:

IOException - Thrown if IO errors occurred.

getFMeasure

public FMeasure getFMeasure()