Package opennlp.tools.util.featuregen

Class TokenFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.TokenFeatureGenerator

All Implemented Interfaces:

AdaptiveFeatureGenerator

public class TokenFeatureGenerator
extends Object
implements AdaptiveFeatureGenerator

Generates a feature which contains the token itself.

Constructor Summary

Constructors

Constructor	Description
TokenFeatureGenerator()	Initializes a TokenFeatureGenerator.
TokenFeatureGenerator(boolean lowercase)	Initializes a TokenFeatureGenerator.

Method Summary

Modifier and Type	Method	Description
void	createFeatures(List<String> features, String[] tokens, int index, String[] preds)	Adds the appropriate features for the token at the specified index with the specified array of previousOutcomes to the specified list of features.

Methods inherited from class java.lang.Object

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

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

clearAdaptiveData, updateAdaptiveData

Constructor Detail

TokenFeatureGenerator

public TokenFeatureGenerator(boolean lowercase)

Initializes a TokenFeatureGenerator.

Parameters:

lowercase - Whether to use lower-casing or not.

TokenFeatureGenerator

public TokenFeatureGenerator()

Initializes a TokenFeatureGenerator. Lower-casing will be enabled.

Method Detail

createFeatures

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

Description copied from interface: AdaptiveFeatureGenerator

Adds the appropriate features for the token at the specified index with the specified array of previousOutcomes to the specified list of features.

Specified by:

createFeatures in interface AdaptiveFeatureGenerator

Parameters:

features - The list of features to be added to.

tokens - The tokens of the sentence or other text unit being processed.

index - The index of the token which is currently being processed.

preds - The outcomes for the tokens prior to the specified index.