Incorporating inheritance and feature structures into a Logic Grammar formalism

  • Authors:
  • Harry H. Porter, III

  • Affiliations:
  • Oregon Graduate Center, Beaverton, Oregon

  • Venue:
  • ACL '87 Proceedings of the 25th annual meeting on Association for Computational Linguistics
  • Year:
  • 1987

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Abstract

Hassan Ait-kaci introduced the ψ-term, an informational structure resembling feature-based functional structures but which also includes taxonomic inheritance (Ait-Kaci, 1984). We describe ψ-terms and how they have been incorporated into the Logic Grammar formalism. The result, which we call Inheritance Grammar, is a proper superset of DCG and includes many features of PATR-II. Its taxonomic reasoning facilitates semantic type-class reasoning during grammatical analysis.