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Show simple item record Britz, Katarina Varzinczak, Ivan J 2019-04-02T07:30:26Z 2019-04-02T07:30:26Z 2018-04
dc.identifier.citation Britz, K. and Varzinczak, I. 2018. Rationality and context in defeasible subsumption. Foundations of Information and Knowledge Systems, pp. 114-132 en_US
dc.identifier.isbn 978-3-319-90049-0
dc.identifier.uri DOI:
dc.description This is the accepted version of the published chapter. The published version cab be obtained via the publisher's website: en_US
dc.description.abstract Description logics have been extended in a number of ways to support defeasible reasoning in the KLM tradition. Such features include preferential or rational defeasible concept subsumption, and defeasible roles in complex concept descriptions. Semantically, defeasible subsumption is obtained by means of a preference order on objects, while defeasible roles are obtained by adding a preference order to role interpretations. In this paper, we address an important limitation in defeasible extensions of description logics, namely the restriction in the semantics of defeasible concept subsumption to a single preference order on objects. We do this by inducing a modular preference order on objects from each preference order on roles, and use these to relativise defeasible subsumption. This yields a notion of contextualised rational defeasible subsumption, with contexts described by roles. We also provide a semantic construction for and a method for the computation of contextual rational closure, and present a correspondence result between the two. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartofseries Worklist;22129
dc.subject Contextual defeasibility en_US
dc.subject Rational entailment en_US
dc.subject Defeasible subsumption en_US
dc.title Rationality and context in defeasible subsumption en_US
dc.type Book chapter en_US

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