| Name | Description | Type | Package | Framework |
| AdaptiveFeatureGenerator | An interface for generating features for name entity identification and for updating document level contexts. | Interface | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| AdditionalContextFeatureGenerator | The AdditionalContextFeatureGenerator generates the context from the passed in additional context. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| AggregatedFeatureGenerator | The AggregatedFeatureGenerator aggregates a set of AdaptiveFeatureGenerators and calls them to generate the features. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| ArtifactToSerializerMapper | | Interface | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BigramNameFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BrownBigramFeatureGenerator | Generates Brown cluster features for token bigrams. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BrownCluster | Class to load a Brown cluster document: word\tword_class\tprob http://metaoptimize. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BrownCluster .BrownClusterSerializer | | Class | opennlp.tools.util.featuregen.BrownCluster | Natural Language Processing (OpenNLP) |
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| BrownTokenClasses | Obtain the paths listed in the pathLengths array from the Brown class. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BrownTokenClassFeatureGenerator | Generates Brown cluster features for current token and token class. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| BrownTokenFeatureGenerator | Generates Brown cluster features for current token. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| CachedFeatureGenerator | Caches features of the aggregated AdaptiveFeatureGenerators. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| CharacterNgramFeatureGenerator | The CharacterNgramFeatureGenerator uses character ngrams to generate features about each token. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| CustomFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| DictionaryFeatureGenerator | The DictionaryFeatureGenerator uses the DictionaryNameFinder to generated features for detected names based on the InSpanGenerator. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| DocumentBeginFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| FastTokenClassFeatureGenerator | Generates features for different for the class of the token. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| FeatureGeneratorAdapter | This class provides empty implementations of some of the optional methods in AdditionalContextFeatureGenerator to make implementing feature generators | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| FeatureGeneratorFactory | The FeatureGeneratorFactory interface is factory for AdaptiveFeatureGenerators. | Interface | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| FeatureGeneratorResourceProvider | The FeatureGeneratorResourceProvider provides access to the resources provided in the model. | Interface | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| FeatureGeneratorUtil | This class provide common utilities for feature generation. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| GeneratorFactory | Creates a set of feature generators based on a provided XML descriptor. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| InSpanGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| OutcomePriorFeatureGenerator | The definition feature maps the underlying distribution of outcomes. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| PrefixFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| PreviousMapFeatureGenerator | This FeatureGeneratorAdapter generates features indicating the outcome associated with a previously occuring word. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| PreviousTwoMapFeatureGenerator | This FeatureGeneratorAdapter generates features indicating the outcome associated with two previously occuring words. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| SentenceFeatureGenerator | This feature generator creates sentence begin and end features. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| StringPattern | Recognizes predefined patterns in strings. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| SuffixFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| TokenClassFeatureGenerator | Generates features for different for the class of the token. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| TokenFeatureGenerator | Generates a feature which contains the token itself. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| TokenPatternFeatureGenerator | Partitions tokens into sub-tokens based on character classes and generates class features for each of the sub-tokens and combinations of those sub-tokens. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| TrigramNameFeatureGenerator | Adds trigram features based on tokens and token classes. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| WindowFeatureGenerator | Generates previous and next features for a given AdaptiveFeatureGenerator. | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| WordClusterDictionary | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |
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| WordClusterDictionary .WordClusterDictionarySerializer | | Class | opennlp.tools.util.featuregen.WordClusterDictionary | Natural Language Processing (OpenNLP) |
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| WordClusterFeatureGenerator | | Class | opennlp.tools.util.featuregen | Natural Language Processing (OpenNLP) |