Stable models and circumscription

  • Authors:
  • Paolo Ferraris;Joohyung Lee;Vladimir Lifschitz

  • Affiliations:
  • Google, Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States;Department of Computer Science and Engineering, Arizona State University, 699 South Mill Avenue, Tempe, AZ 85281, United States;Department of Computer Sciences, University of Texas at Austin, 1 University Station C0500, Austin, TX 78712, United States

  • Venue:
  • Artificial Intelligence
  • Year:
  • 2011

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Abstract

The concept of a stable model provided a declarative semantics for Prolog programs with negation as failure and became a starting point for the development of answer set programming. In this paper we propose a new definition of that concept, which covers many constructs used in answer set programming and, unlike the original definition, refers neither to grounding nor to fixpoints. It is based on a syntactic transformation similar to parallel circumscription.