Class PrefixFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.PrefixFeatureGenerator

All Implemented Interfaces:

opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

public class PrefixFeatureGenerator
extends Object
implements opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

A feature generator implementation that generates prefix-based features.

See Also:

• AdaptiveFeatureGenerator

Constructor Summary

Constructors

Constructor	Description
PrefixFeatureGenerator()	Intializes a default PrefixFeatureGenerator.
PrefixFeatureGenerator(int prefixLength)	Intializes a PrefixFeatureGenerator with the specified prefixLength.

Method Summary

Modifier and Type	Method	Description
void	createFeatures(List<String> features, String[] tokens, int index, String[] previousOutcomes)

Methods inherited from class Object

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

Methods inherited from interface opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

clearAdaptiveData, updateAdaptiveData

Constructor Details

PrefixFeatureGenerator

public PrefixFeatureGenerator()

Intializes a default PrefixFeatureGenerator. The prefixLength length is set to the value of DEFAULT_MAX_LENGTH.

PrefixFeatureGenerator

public PrefixFeatureGenerator(int prefixLength)

Intializes a PrefixFeatureGenerator with the specified prefixLength.

Parameters:

prefixLength - The upper boundary prefix length to use.

Method Details

createFeatures

public void createFeatures(List<String> features,
 String[] tokens,
 int index,
 String[] previousOutcomes)

Specified by:

createFeatures in interface opennlp.tools.util.featuregen.AdaptiveFeatureGenerator