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general regex/grammar matching on TaggedSentences #9

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creswick opened this issue Jan 23, 2014 · 0 comments

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creswick commented Jan 23, 2014

I want to support matching on patterns of strings / POS tags with expressions similar to NLTK's, for example:

grammar = r"""
  NP: {<DT|PP\$>?<JJ>*<NN>}   # chunk determiner/possessive, adjectives and nouns
      {<NNP>+}                # chunk sequences of proper nouns
"""

But with a few changes:

I don't want to use the string representation (this seems like a /great/ place for an eDSL)
I want support for literal strings, literal tokens, and tags.
I'd like to build this on an API that essentially does regex parsing, but by taking a sequence of equality relations across tokens, rather than strict equality. So, instead of expressing the pattern in terms of specific tokens, you can express it in terms of predicates.

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