Multiple default inheritance in a unification-based lexicon

  • Authors:
  • Graham Russell;John Carroll;Susan Warwick-Armstrong

  • Affiliations:
  • ISSCO, Geneva, Switzerland;ISSCO, Geneva, Switzerland;ISSCO, Geneva, Switzerland

  • Venue:
  • ACL '91 Proceedings of the 29th annual meeting on Association for Computational Linguistics
  • Year:
  • 1991

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Abstract

A formalism is presented for lexical specification in unification-based grammars which exploits defeasible multiple inheritance to express regularity, sub-regularity, and exceptions in classifying the properties of words. Such systems are in the general case intractable; the present proposal represents an attempt to reduce complexity while retaining sufficient expressive power for the task at hand. Illustrative examples are given of morphological analyses from English and German.