Package opennlp.tools.postag

Class ConfigurablePOSContextGenerator

java.lang.Object

opennlp.tools.postag.ConfigurablePOSContextGenerator

All Implemented Interfaces:

POSContextGenerator, BeamSearchContextGenerator<String>

public class ConfigurablePOSContextGenerator
extends Object
implements POSContextGenerator

A configurable context generator for a POSTagger. This implementation makes use of AdaptiveFeatureGenerator.

See Also:

POSTagger, POSTaggerME, DefaultPOSContextGenerator

Constructor Summary

Constructors

Constructor	Description
ConfigurablePOSContextGenerator(int cacheSize, AdaptiveFeatureGenerator featureGenerator)	Initializes a ConfigurablePOSContextGenerator instance.
ConfigurablePOSContextGenerator(AdaptiveFeatureGenerator featureGenerator)	Initializes a ConfigurablePOSContextGenerator instance.

Method Summary

Modifier and Type	Method	Description
String[]	getContext(int index, String[] tokens, String[] tags, Object[] additionalContext)	Returns the context for making a postag decision at the specified token index given the specified tokens and previous tags.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigurablePOSContextGenerator

public ConfigurablePOSContextGenerator(AdaptiveFeatureGenerator featureGenerator)

Initializes a ConfigurablePOSContextGenerator instance. A cache size of 0 will be used as default.

Parameters:

featureGenerator - The AdaptiveFeatureGenerator to be used.

ConfigurablePOSContextGenerator

public ConfigurablePOSContextGenerator(int cacheSize,
                                       AdaptiveFeatureGenerator featureGenerator)

Initializes a ConfigurablePOSContextGenerator instance.

Parameters:

cacheSize - The size of the Cache to set. Must be greater than 0 to have an effect.

featureGenerator - The AdaptiveFeatureGenerator to be used.

Method Detail

getContext

public String[] getContext(int index,
                           String[] tokens,
                           String[] tags,
                           Object[] additionalContext)

Returns the context for making a postag decision at the specified token index given the specified tokens and previous tags.

Specified by:

getContext in interface BeamSearchContextGenerator<String>

Specified by:

getContext in interface POSContextGenerator

Parameters:

index - The index of the token for which the context is provided.

tokens - The tokens representing a sentence.

tags - The tags assigned to the previous words in the sentence.

additionalContext - The context for additional information.

Returns:

The context for making a postag decision at the specified token index given the specified tokens and previous tags.