AAAI Publications, Twenty-Second International Joint Conference on Artificial Intelligence

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Transitively Relational Partial Meet Horn Contraction
Zhiqiang Zhuang, Maurice Pagnucco

Last modified: 2011-06-28

Abstract


Following the recent trend of studying the theory of belief revision under the Horn fragment of propo- sitional logic this paper develops a fully charac- terised Horn contraction which is analogous to the traditional transitively relational partial meet contraction [Alchourron et al., 1985]. This Horn con- traction extends the partial meet Horn contraction studied in [Delgrande and Wassermann, 2010] so that it is guided by a transitive relation that models the ordering of plausibility over sets of beliefs.

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