opennlp.tools.lemmatizer (Apache OpenNLP Tools 1.9.5 API)
Date: 2026-06-18

# Package opennlp.tools.lemmatizer

Package related with the lemmatizer tool

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  Lemmatizer | The interface for lemmatizers.
  LemmatizerContextGenerator | Interface for the context generator used for probabilistic lemmatizer.
  LemmatizerEvaluationMonitor | Interface for the lemmatizer evaluator.

- Class Summary
  Class | Description
  --- | ---
  DefaultLemmatizerContextGenerator | Simple feature generator for learning statistical lemmatizers.
  DefaultLemmatizerSequenceValidator |
  DictionaryLemmatizer | Lemmatize by simple dictionary lookup into a hashmap built from a file containing, for each line, word\tabpostag\tablemma.
  LemmaSample | Represents an lemmatized sentence.
  LemmaSampleEventStream | Class for creating an event stream out of data files for training a probabilistic lemmatizer.
  LemmaSampleSequenceStream |
  LemmaSampleStream | Reads data for training and testing the lemmatizer.
  LemmatizerEvaluator | The `LemmatizerEvaluator` measures the performance of the given `Lemmatizer` with the provided reference `LemmaSample`s.
  LemmatizerFactory |
  LemmatizerME | A probabilistic lemmatizer.
  LemmatizerModel | The `LemmatizerModel` is the model used by a learnable `Lemmatizer`.

## Package opennlp.tools.lemmatizer Description

Package related with the lemmatizer tool

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