Modal probability, belief, and actions

  • Authors:
  • Andreas Herzig

  • Affiliations:
  • Institut de Recherche en Informatique de Toulouse (CNRS-INP-UPS), Toulouse, France

  • Venue:
  • Fundamenta Informaticae
  • Year:
  • 2003

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Abstract

We investigate a modal logic of probability with a unary modal operator expressing that a proposition is more probable than its negation. Such an operator is not closed under conjunction, and its modal logic is therefore non-normal. Within this framework we study the relation of probability with other modal concepts: belief and action. We focus on the evolution of belief, and propose an integration of revision. For that framework we give a regression algorithm.