Field Detail

• DOWN_SEPARATOR

  protected final String DOWN_SEPARATOR

  See Also:

  Constant Field Values

• isPartial

  protected boolean isPartial

• name

  protected String name

• pathMemberExtractor

  protected FeatureExtractor1<TreebankNode> pathMemberExtractor

• UP_SEPARATOR

  protected final String UP_SEPARATOR

  See Also:

  Constant Field Values

Constructor Detail

• SyntacticPathExtractor

  public SyntacticPathExtractor(FeatureExtractor1<TreebankNode> pathMemberExtractor)

  This constructor defaults to a full rather than a partial path.

• SyntacticPathExtractor

  public SyntacticPathExtractor(FeatureExtractor1<TreebankNode> pathMemberExtractor,
                        boolean partial)

  Parameters:

  pathMemberExtractor - this extractor will be used to get a feature for every node on the path, which will then be combined to form a single string. The extractor should preferably generate exactly one StringFeature, but must generate at least one StringFeature, LongFeature, DoubleFeature, or BooleanFeature. Only the first feature will then be used and naively converted to a string.

  partial - if true, generate a partial path only, i.e. from the first node up to the lowest common ancestor of the two

Method Detail

• extract

  public List<Feature> extract(JCas view,
                      TreebankNode leftConstituent,
                      TreebankNode rightConstituent)
                        throws CleartkExtractorException

  Extract a string representation of a path feature.

  Specified by:

  extract in interface FeatureExtractor2<TreebankNode,TreebankNode>

  Parameters:

  leftConstituent - the first node of the path

  rightConstituent - the last node of the path

  Returns:

  List of one StringFeature, which contains a string representation of the path between the two nodes.

  Throws:

  CleartkExtractorException