The P-systems: a systematic classification of logics of n onmonotonicity

  • Authors:
  • Wolfgang Nejdl

  • Affiliations:
  • Technical University of Vienna, Vienna, Austria

  • Venue:
  • AAAI'91 Proceedings of the ninth National conference on Artificial intelligence - Volume 1
  • Year:
  • 1991

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Abstract

In the last years many logics of nonmonotonicity have been developed using various different formalisms and axiomatizations which makes them very difficult to compare. We develop a classification scheme for these logics using only a few simple concepts and axioms based on conditional logics, properties of partial preorders of possible states (worlds) and centering assumptions. Our framework (the P-Systems) allows us to discuss the similarities, main differences and possible extensions of these logics in a simple and natural way.