Package opennlp.tools.util.featuregen

Class EmojiAnnotationFeatureGenerator

java.lang.Object

opennlp.tools.util.featuregen.EmojiAnnotationFeatureGenerator

All Implemented Interfaces:

opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

public class EmojiAnnotationFeatureGenerator
extends Object
implements opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

Generates features from the emoji annotation layer for the token at the given index: the project-authored coarse sentiment score (emojiSentiment=2), the entity type (emojiType=HEART), the document category (emojiCategory=SMILEYS_AND_EMOTION), and for flags the ISO 3166 region (emojiRegion=DE). For the name finder the entity type behaves like gazetteer evidence: a flag token carries emojiType=FLAG and its region without any dictionary.

Strictly opt-in: this generator only runs when a feature generation descriptor names EmojiAnnotationFeatureGeneratorFactory, so default descriptors and existing models are unchanged. A token that is not an annotated symbol contributes no features.

Unlike most feature generators this one is stateless and thread-safe (when its annotator's join is): it keeps no adaptive data.

See Also:

• EmojiAnnotator

Constructor Summary

Constructors

Constructor	Description
EmojiAnnotationFeatureGenerator()	Instantiates a generator over the bundled and derived annotation layers.
EmojiAnnotationFeatureGenerator(EmojiAnnotator annotator)	Instantiates a generator over a configured annotator, for example one with a gazetteer join.

Method Summary

Modifier and Type	Method	Description
void	createFeatures(List<String> features, String[] tokens, int index, String[] previousOutcomes)

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

EmojiAnnotationFeatureGenerator

public EmojiAnnotationFeatureGenerator()

Instantiates a generator over the bundled and derived annotation layers.

EmojiAnnotationFeatureGenerator

public EmojiAnnotationFeatureGenerator(EmojiAnnotator annotator)

Instantiates a generator over a configured annotator, for example one with a gazetteer join.

Parameters:

annotator - The annotator to use. Must not be null.

Throws:

IllegalArgumentException - if annotator is null.

Method Details

createFeatures

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

Adds one feature per present annotation attribute of the token at index.

Specified by:

createFeatures in interface opennlp.tools.util.featuregen.AdaptiveFeatureGenerator

Throws:

IllegalArgumentException - if features or tokens is null.