An Earley-style predictive chart parsing method for Lambek grammars

  • Authors:
  • Mark Hepple

  • Affiliations:
  • University of Sheffield, Sheffield, UK

  • Venue:
  • ACL '99 Proceedings of the 37th annual meeting of the Association for Computational Linguistics on Computational Linguistics
  • Year:
  • 1999

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Abstract

We present a new chart parsing method for Lambek grammars, inspired by a method for D-Tree grammar parsing. The formulae of a Lambek sequent are firstly converted into rules of an indexed grammar formalism, which are used in an Earley-style predictive chart algorithm. The method is non-polynomial, but performs well for practical purposes---much better than previous chart methods for Lambek grammars.