Package opennlp.tools.util.featuregen

Class AggregatedFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.AggregatedFeatureGenerator

All Implemented Interfaces:

AdaptiveFeatureGenerator

public class AggregatedFeatureGenerator
extends Object
implements AdaptiveFeatureGenerator

The AggregatedFeatureGenerator aggregates a set of feature generators and calls them to generate the features.

Constructor Summary

Constructors

Constructor	Description
AggregatedFeatureGenerator(Collection<AdaptiveFeatureGenerator> generators)	Initializes an AggregatedFeatureGenerator via specified generators.
AggregatedFeatureGenerator(AdaptiveFeatureGenerator... generators)	Initializes an AggregatedFeatureGenerator via specified generators.

Method Summary

Modifier and Type	Method	Description
void	clearAdaptiveData()	Calls the AdaptiveFeatureGenerator.clearAdaptiveData() method on all aggregated feature generators.
void	createFeatures(List<String> features, String[] tokens, int index, String[] previousOutcomes)	Calls the AdaptiveFeatureGenerator.createFeatures(List, String[], int, String[]) method on all aggregated feature generators.
Collection<AdaptiveFeatureGenerator>	getGenerators()	Retrieves a Collections of all aggregated feature generators.
void	updateAdaptiveData(String[] tokens, String[] outcomes)	Calls the AdaptiveFeatureGenerator.updateAdaptiveData(String[], String[]) method on all aggregated feature generators.

Methods inherited from class java.lang.Object

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

Constructor Details

AggregatedFeatureGenerator

public AggregatedFeatureGenerator(AdaptiveFeatureGenerator... generators)

Initializes an AggregatedFeatureGenerator via specified generators.

Parameters:

generators - A collection of generators, null values are not permitted.

AggregatedFeatureGenerator

public AggregatedFeatureGenerator(Collection<AdaptiveFeatureGenerator> generators)

Initializes an AggregatedFeatureGenerator via specified generators.

Parameters:

generators - A collection of generators, null values are not permitted.

Method Details

clearAdaptiveData

public void clearAdaptiveData()

Calls the AdaptiveFeatureGenerator.clearAdaptiveData() method on all aggregated feature generators.

Specified by:

clearAdaptiveData in interface AdaptiveFeatureGenerator

createFeatures

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

Calls the AdaptiveFeatureGenerator.createFeatures(List, String[], int, String[]) method on all aggregated feature generators.

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.

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

updateAdaptiveData

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

Calls the AdaptiveFeatureGenerator.updateAdaptiveData(String[], String[]) method on all aggregated feature generators.

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.

getGenerators

public Collection<AdaptiveFeatureGenerator> getGenerators()

Retrieves a Collections of all aggregated feature generators.

Returns:

All aggregated generators in use.