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All Elephants are Bigger than All Mice

Published: 2008 Mai

Buchtitel: Proceedings of the 21st International Workshop on Description Logics (DL2008)
Referierte Veröffentlichung

We introduce the concept product as a new expressive feature to description logics (DLs). While this construct allows us to express an arguably very common and natural type of statement, it can be simulated only by the very expressive DL SROIQ for which no tight worst-case complexity is known. However, we show that concept products can also be added to the DLs SHOIQ and SHOI, and to the tractable DL EL++ without increasing the worst-case complexities in any of those cases. We therefore argue that concept products provide practically relevant expressivity at little cost, making them a good candidate for future extensions of the DL-based ontology language OWL.

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Komplexitätstheorie, Logik, Semantic Web, Ontologiemodellierung, Wissensrepräsentationssprachen, Beschreibungslogik, Wissensrepräsentation