Multiple contraction revisited
Multiple contraction revisited
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重温多次宫缩
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
W. Spohn
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文献类型：
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作者：
W. Spohn
多重收缩包括同时放弃几个信念。AGM信念修正理论对多重收缩的处理一直不尽如人意。本文提出了一个清晰的，合理的，和一般性的模型，多个收缩在排名理论的条款，根据该多重收缩原来减少到单一的收缩。被{A1，.，An}乘收缩的信念集是所有被Ai（i = 1，.，n）单收缩的信念集的交集。
Multiple contraction consists in giving up several beliefs at once. The treatments of multiple contraction in AGM belief revision theory have remained unsatisfactory. The paper proposes a clear, plausible, and general model for multiple contraction in ranking-theoretic terms according to which multiple contraction turns out to reduce to single contractions. The belief set multiply contracted by {A 1, …, A n } is just the intersection of all the belief sets singly contracted by A i (i = 1, …, n).