Computer Science – Artificial Intelligence
Scientific paper
2002-10-03
Proc. of the 9th Workshop on Non-monotonic Reasoning (NMR'2002), pp. 142--149
Computer Science
Artificial Intelligence
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Scientific paper
This paper deals with the revision of partially ordered beliefs. It proposes a semantic representation of epistemic states by partial pre-orders on interpretations and a syntactic representation by partially ordered belief bases. Two revision operations, the revision stemming from the history of observations and the possibilistic revision, defined when the epistemic state is represented by a total pre-order, are generalized, at a semantic level, to the case of a partial pre-order on interpretations, and at a syntactic level, to the case of a partially ordered belief base. The equivalence between the two representations is shown for the two revision operations.
Benferhat Salem
Lagrue Sylvain
Papini Odile
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