Sometimes updates are circumscription

  • Authors:
  • Marianne Winslett

  • Affiliations:
  • Computer Science Department, University of Illinois, Urbana, IL

  • Venue:
  • IJCAI'89 Proceedings of the 11th international joint conference on Artificial intelligence - Volume 2
  • Year:
  • 1989

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Abstract

Model-based revision of knowledge bases expressed as first-order theories was shown in [Winslett 88b] to be useful as a means of describing and reasoning about the effects of actions. This paper shows that model-based theory revision is actually expressible as a form of circumscription. This shows that in certain applications, the cumbersome conceptually machinery of circumscription can be replaced by the intuitively simpler ideas of model-based theory revision. Where theory revision techniques are insufficient to capture the semantics of change in an application, circumscription will offer a more flexible environment. In addition, future advances in computing circumscription can be mapped to improvements in computing theory revisions, and vice versa.