Introspective Forgetting

  • Authors:
  • Hans Ditmarsch;Andreas Herzig;Jérôme Lang;Pierre Marquis

  • Affiliations:
  • Computer Science, University of Otago, New Zealand and IRIT, Université Paul Sabatier, France;IRIT, Université Paul Sabatier, France;IRIT, Université Paul Sabatier, France;CRIL, Université d'Artois, France

  • Venue:
  • AI '08 Proceedings of the 21st Australasian Joint Conference on Artificial Intelligence: Advances in Artificial Intelligence
  • Year:
  • 2008
  • Forgetting for defeasible logic

    LPAR'12 Proceedings of the 18th international conference on Logic for Programming, Artificial Intelligence, and Reasoning

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Abstract

We model the forgetting of propositional variables in a modal logical context where agents become ignorant and are aware of each others' or their own resulting ignorance. The resulting logic is sound and complete. It can be compared to variable-forgetting as abstraction from information, wherein agents become unaware of certain variables: by employing elementary results for bisimulation, it follows that beliefs not involving the forgotten atom(s) remain true.