A datalog recognizer for almost affine λ-CFGs

  • Authors:
  • Pierre Bourreau;Sylvain Salvati

  • Affiliations:
  • LaBRI, INRIA Sud-Ouest, Talence Cedex, France;LaBRI, INRIA Sud-Ouest, Talence Cedex, France

  • Venue:
  • MOL'11 Proceedings of the 12th biennial conference on The mathematics of language
  • Year:
  • 2011

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Abstract

The recent emergence of linguistic formalisms exclusively based on the simply-typed λ-calculus to represent both syntax and semantics led to the presentation of innovative techniques which apply to both the problems of parsing and generating natural languages. A common feature of these techniques consists in using strong relations between typing properties and syntactic structures of families of simply-typed λ-terms. Among significant results, an efficient algorithm based on Datalog programming is presented in [Kan07] for context-free grammar of almost linear λ-terms, which are linear λ-terms augmented with a restricted form of copy. We present an extension of this method to terms for which deletion is allowed.