Package opennlp.tools.util.featuregen

Class DictionaryFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.DictionaryFeatureGenerator

All Implemented Interfaces:

AdaptiveFeatureGenerator

public class DictionaryFeatureGenerator
extends Object
implements AdaptiveFeatureGenerator

The DictionaryFeatureGenerator uses a DictionaryNameFinder to generate features for detected names based on the InSpanGenerator.

See Also:

• Dictionary
• DictionaryNameFinder
• InSpanGenerator

Constructor Summary

Constructors

Constructor	Description
DictionaryFeatureGenerator(String prefix, Dictionary dict)	Initializes a DictionaryFeatureGenerator with the specified parameters.
DictionaryFeatureGenerator(Dictionary dict)	Initializes a DictionaryFeatureGenerator with the specified Dictionary.

Method Summary

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

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 Details

DictionaryFeatureGenerator

public DictionaryFeatureGenerator(Dictionary dict)

Initializes a DictionaryFeatureGenerator with the specified Dictionary.

Parameters:

dict - The Dictionary to use. Must not be null.

DictionaryFeatureGenerator

public DictionaryFeatureGenerator(String prefix,
 Dictionary dict)

Initializes a DictionaryFeatureGenerator with the specified parameters.

Parameters:

prefix - The prefix to set. Must not be null but may be empty.

dict - The Dictionary to use. Must not be null.

Method Details

setDictionary

public void setDictionary(Dictionary dict)

setDictionary

public void setDictionary(String name,
 Dictionary dict)

createFeatures

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

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.

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