Relating complexity to practical performance in parsing with wide-coverage unification grammars

  • Authors:
  • John Carroll

  • Affiliations:
  • University of Cambridge, Cambridge, UK

  • Venue:
  • ACL '94 Proceedings of the 32nd annual meeting on Association for Computational Linguistics
  • Year:
  • 1994

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Abstract

The paper demonstrates that exponential complexities with respect to grammar size and input length have little impact on the performance of three unification-based parsing algorithms, using a wide-coverage grammar. The results imply that the study and optimisation of unification-based parsing must rely on empirical data until complexity theory can more accurately predict the practical behaviour of such parsers1.