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|Booktitle=Proceedings of the 25th  Conference on Artificial Intelligence
 
|Booktitle=Proceedings of the 25th  Conference on Artificial Intelligence
 
|Publisher=AAAI 2011
 
|Publisher=AAAI 2011
|Note=to appear.
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|Note=to appear
 
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{{Publikation Details

Version vom 17. Mai 2011, 07:26 Uhr


Revisiting Semantics for Epistemic Extensions of Description Logics


Revisiting Semantics for Epistemic Extensions of Description Logics



Published: 2011 August

Buchtitel: Proceedings of the 25th Conference on Artificial Intelligence
Verlag: AAAI 2011

Nicht-referierte VeröffentlichungNote: to appear

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Kurzfassung
Epistemic extensions of description logics (DLs) have been introduced several years ago in order to enhance expressivity and querying capabilities of these logics by knowledge base introspection. We argue that unintended effects occur when imposing the semantics traditionally employed on the very expressive DLs that underly the OWL 1 and OWL 2 standards. Consequently, we suggest a revised semantics that behaves more intuitively in these cases and coincides with the traditional semantics on less expressive DLs. Moreover, we introduce a way of answering epistemic queries to OWL knowledge bases by a reduction to standard OWL reasoning. We provide an implementation of our approach and present first evaluation results.


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