Forgetting Concepts in DL-Lite

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Title Forgetting Concepts in DL-Lite
Author Wang, Jack; Wang, Kewen; Topor, Rodney William; Pan, Jeff Z.
Publication Title The Semantic Web: Research and Applications
Editor Sean Bechhofer, Manfred Hauswirth, Jörg Hoffmann, Manolis Koubarakis
Year Published 2008
Place of publication Germany
Publisher Springer
Abstract To support the reuse and combination of ontologies in Semantic Web applications, it is often necessary to obtain smaller ontologies from existing larger ontologies. In particular, applications may require the omission of many terms, e.g., concept names and role names, from an ontology. However, the task of omitting terms from an ontology is challenging because the omission of some terms may affect the relationships between the remaining terms in complex ways. We present the first solution to this problem by adapting the technique of forgetting, previously used in other domains. Specifically, we present a semantic definition of forgetting for description logics in general, which generalizes the standard definition for classical logic. We then introduce algorithms that implement forgetting in both DL-Lite TBoxes and ABoxes, and in DL-Lite knowledge bases. We prove that the algorithms are correct with respect to the semantic definition of forgetting, and that they run in polynomial time.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2008 Springer. The attached file is reproduced here in accordance with the copyright policy of the publisher. The original publication is available at
ISBN 978-3-540-68233-2
Conference name 5th European Semantic Web Conference, ESWC 2008
Location Canary Islands, Spain
Date From 2008-01-01
Date To 2008-01-05
Date Accessioned 2009-03-03
Language en_AU
Research Centre Institute for Integrated and Intelligent Systems
Faculty Faculty of Science, Environment, Engineering and Technology
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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