Package opennlp.tools.chunker

Interface Chunker

All Known Implementing Classes:
ChunkerME, ThreadSafeChunkerME
public interface Chunker
The interface for chunkers which provide chunk tags for a sequence of tokens.

  • Method Details

    • chunk

      String[] chunk(String[] toks, String[] tags)
      Generates chunk tags for the given sequence returning the result in an array.
      Parameters:
      toks - an array of the tokens or words of the sequence.
      tags - an array of the pos tags of the sequence.
      Returns:
      an array of chunk tags for each token in the sequence.

    • chunkAsSpans

      Span[] chunkAsSpans(String[] toks, String[] tags)
      Generates tagged chunk spans for the given sequence returning the result in a span array.
      Parameters:
      toks - an array of the tokens or words of the sequence.
      tags - an array of the pos tags of the sequence.
      Returns:
      an array of spans with chunk tags for each chunk in the sequence.

    • topKSequences

      Sequence[] topKSequences(String[] sentence, String[] tags)
      Computes the top k chunk sequences for the specified sentence with the specified pos-tags.
      Parameters:
      sentence - The tokens of the sentence.
      tags - The pos-tags for the specified sentence.
      Returns:
      the top k chunk sequences for the specified sentence.

    • topKSequences

      Sequence[] topKSequences(String[] sentence, String[] tags, double minSequenceScore)
      Computes the top k chunk sequences for the specified sentence with the specified pos-tags.
      Parameters:
      sentence - The tokens of the sentence.
      tags - The pos-tags for the specified sentence.
      minSequenceScore - A lower bound on the score of a returned sequence.
      Returns:
      the top k chunk sequences for the specified sentence.