Package opennlp.tools.doccat

Class EmojiFeatureGenerator

java.lang.Object

opennlp.tools.doccat.EmojiFeatureGenerator

All Implemented Interfaces:

opennlp.tools.doccat.FeatureGenerator

public class EmojiFeatureGenerator
extends Object
implements opennlp.tools.doccat.FeatureGenerator

Generates document features from the emoji annotation layer: for every annotated token the project-authored coarse sentiment score (emojiSentiment=2), the entity type (emojiType=HEART), the document category hint (emojiCategory=SMILEYS_AND_EMOTION), and for flags the ISO 3166 region (emojiRegion=DE). Tokens that are not annotated symbols contribute nothing.

Strictly opt-in: pass it alongside the defaults, for example new DoccatFactory(new FeatureGenerator[] {new BagOfWordsFeatureGenerator(), new EmojiFeatureGenerator()}); the default factory configuration is unchanged. The no-argument constructor is required so a trained model can re-instantiate the generator from its manifest.

See Also:

• EmojiAnnotator

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
Collection<String>	extractFeatures(String[] text, Map<String,Object> extraInformation)

Methods inherited from class java.lang.Object

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

Constructor Details

EmojiFeatureGenerator

public EmojiFeatureGenerator()

Instantiates a generator over the bundled and derived annotation layers.

EmojiFeatureGenerator

public EmojiFeatureGenerator(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

extractFeatures

public Collection<String> extractFeatures(String[] text,
 Map<String,Object> extraInformation)

Specified by:

extractFeatures in interface opennlp.tools.doccat.FeatureGenerator

Throws:

IllegalArgumentException - if text is null.