opennlp.tools.util.featuregen

Class PreviousTwoMapFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.PreviousTwoMapFeatureGenerator

All Implemented Interfaces:

AdaptiveFeatureGenerator

public class PreviousTwoMapFeatureGenerator
extends Object
implements AdaptiveFeatureGenerator

This AdaptiveFeatureGenerator generates features indicating the outcome associated with two previously occuring words.

Constructor Summary

Constructors

Constructor and Description
PreviousTwoMapFeatureGenerator()

Method Summary

Modifier and Type	Method and Description
void	clearAdaptiveData() Clears the previous map.
void	createFeatures(List<String> features, String[] tokens, int index, String[] preds) Generates previous decision features for the token based on contents of the previous map.
void	updateAdaptiveData(String[] tokens, String[] outcomes) Informs the feature generator that the specified tokens have been classified with the corresponding set of specified outcomes.

Methods inherited from class java.lang.Object

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

Constructor Detail

PreviousTwoMapFeatureGenerator

public PreviousTwoMapFeatureGenerator()

Method Detail

createFeatures

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

Generates previous decision features for the token based on contents of the previous map.

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.

updateAdaptiveData

public void updateAdaptiveData(String[] tokens,
                               String[] outcomes)

Description copied from interface: AdaptiveFeatureGenerator

Informs the feature generator that the specified tokens have been classified with the corresponding set of specified outcomes.

Specified by:

updateAdaptiveData in interface AdaptiveFeatureGenerator

Parameters:

tokens - The tokens of the sentence or other text unit which has been processed.

outcomes - The outcomes associated with the specified tokens.

clearAdaptiveData

public void clearAdaptiveData()

Clears the previous map.

Specified by:

clearAdaptiveData in interface AdaptiveFeatureGenerator