Package de.jungblut.ner

Interface SequenceFeatureExtractor<K>

  • All Known Implementing Classes:
    BasicFeatureExtractor
    public interface SequenceFeatureExtractor<K>
    Interface for feature extraction in sequence learning. Can be used with the SparseFeatureExtractorHelper to calculate real vectors to use in a classifier.
    Author:
    thomas.jungblut

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.util.List<java.lang.String> computeFeatures​(java.util.List<K> words, int prevLabel, int position)
      Compute a feature for the given sequence (the complete list words).

    • Method Detail

      • computeFeatures

        java.util.List<java.lang.String> computeFeatures​(java.util.List<K> words,
                                                 int prevLabel,
                                                 int position)
        Compute a feature for the given sequence (the complete list words). Given are the previous label and the current index (position). This method will be called for every index in the list of words.
        Parameters:
        words - all words in that sequence.
        prevLabel - the previous label.
        position - the current position.
        Returns:
        a set of features for this position.