Package opennlp.tools.util.featuregen

Class PreviousMapFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.PreviousMapFeatureGenerator

All Implemented Interfaces:

AdaptiveFeatureGenerator

public class PreviousMapFeatureGenerator
extends Object
implements AdaptiveFeatureGenerator

This AdaptiveFeatureGenerator generates features indicating the outcome associated with a previously occurring word.

Constructor Summary

Constructors

Constructor	Description
PreviousMapFeatureGenerator()

Method Summary

Modifier and Type	Method	Description
void	clearAdaptiveData()	Informs a feature generator that the context of the adaptive data (typically a document) is no longer valid.
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.
void	updateAdaptiveData(String[] tokens, String[] outcomes)	Generates previous decision features for the token based on contents of the previous map.

Methods inherited from class java.lang.Object

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

Constructor Details

PreviousMapFeatureGenerator

public PreviousMapFeatureGenerator()

Method Details

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.

updateAdaptiveData

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

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

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()

Description copied from interface: AdaptiveFeatureGenerator

Informs a feature generator that the context of the adaptive data (typically a document) is no longer valid.

Specified by:

clearAdaptiveData in interface AdaptiveFeatureGenerator