The dynamics of relevance: adaptive belief revision

Synthese 187 (S1):1-42 (2012)
This paper presents eight (previously unpublished) adaptive logics for belief revision, each of which define a belief revision operation in the sense of the AGM framework. All these revision operations are shown to satisfy the six basic AGM postulates for belief revision, and Parikh's axiom of Relevance. Using one of these logics as an example, we show how their proof theory gives a more dynamic flavor to belief revision than existing approaches. It is argued that this turns belief revision (that obeys Relevance) into a more natural undertaking, where analytic steps are performed only as soon as they turn out to be necessary in order to uphold certain beliefs
Keywords Adaptive logics  Splittings  Relevance  LOGIC  Dynamic belief revision  OPERATORS
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DOI 10.1007/s11229-012-0116-9
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John Pollock (1987). Defeasible Reasoning. Cognitive Science 11 (4):481-518.

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Peter Gardenfors (1990). Belief Revision and Relevance. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:349 - 365.
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