nltk.corpus.reader.propbank.PropbankPointer

class documentation

class PropbankPointer(object): (source)

Known subclasses: nltk.corpus.reader.propbank.PropbankChainTreePointer, nltk.corpus.reader.propbank.PropbankSplitTreePointer, nltk.corpus.reader.propbank.PropbankTreePointer

View In Hierarchy

A pointer used by propbank to identify one or more constituents in a parse tree. PropbankPointer is an abstract base class with three concrete subclasses:

  • PropbankTreePointer is used to point to single constituents.
  • PropbankSplitTreePointer is used to point to 'split' constituents, which consist of a sequence of two or more PropbankTreePointer pointers.
  • PropbankChainTreePointer is used to point to entire trace chains in a tree. It consists of a sequence of pieces, which can be PropbankTreePointer or PropbankSplitTreePointer pointers.
Method __init__ Undocumented