Finite-state approximation of constraint-based grammars using left-corner grammar transforms

  • Authors:
  • Mark Johnson

  • Affiliations:
  • Cognitive and Linguistic Sciences, Brown University

  • Venue:
  • COLING '98 Proceedings of the 17th international conference on Computational linguistics - Volume 1
  • Year:
  • 1998

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Abstract

This paper describes how to construct a finite-state machine (FSM) approximating a 'unification-based' grammar using a left-corner grammar transform. The approximation is presented as a series of grammar transforms, and is exact for left-linear and right-linear CFGs, and for trees up to a user-specified depth of center-embedding.