Morphology with two-level rules and negative rule features

  • Authors:
  • John Bear

  • Affiliations:
  • Artificial Intelligence Center and Center for the Study of Language and Information, SRI International

  • Venue:
  • COLING '88 Proceedings of the 12th conference on Computational linguistics - Volume 1
  • Year:
  • 1988

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Abstract

Two-level phonology, as currently practiced, has two severe limitations. One is that phonological generalizations are generally expressed in terms of transition tables of finite-state automata, and these tables are cumbersome to develop and refine. The other is that lexical idiosyncrasy is encoded by introducing arbitrary diacritics into the spelling of a morpheme. This paper explains how phonological rules may be employed instead of transition tables and describes a more elegant way of expressing phonological irregularity than with arbitrary diacritics, making use of the fact that generalizations are expressed with rules instead of automata.