Revising Partially Ordered Beliefs
<|reference_start|>Revising Partially Ordered Beliefs: 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.<|reference_end|>
@article{benferhat2002revising,
    title={Revising Partially Ordered Beliefs},
    author={Salem Benferhat, Sylvain Lagrue, Odile Papini},
    journal={Proc. of the 9th Workshop on Non-monotonic Reasoning (NMR'2002),
  pp. 142--149},
    year={2002},
    archivePrefix={arXiv},
    eprint={cs/0210004},
    primaryClass={cs.AI}
}