AAAI Publications, Twenty-Second International FLAIRS Conference

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A Knowledge Compilation Technique for ALC Tboxes
Ulrich Furbach, Heiko Günther, Claudia Obermaier

Last modified: 2009-03-16

Abstract


Knowledge compilation is a common technique for propositional logic knowledge bases. A given knowledge base is transformed into a normal form, for which queries can be answered efficiently. This precompilation step is expensive, but it only has to be performed once.  We apply this technique to knowledge bases defined  in the Description Logic ALC. We discuss an efficient satisfiability test as well as a subsumption test for precompiled concepts and Tboxes. Further we use the precompiled Tboxes for efficient Tbox reasoning. Finally we present first experimental results of our approach.


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