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Aktuelle Version vom 16. Oktober 2009, 23:07 Uhr
A Decentralized Infrastructure for Query Answering over Distributed Ontologies
A Decentralized Infrastructure for Query Answering over Distributed Ontologies
Published: 2007
März
Buchtitel: Proceedings of The 22nd Annual ACM Symposium on Applied Computing (SAC)
Verlag: ACM Press
Erscheinungsort: Seoul, Korea
Referierte Veröffentlichung
BibTeX
Kurzfassung
In this paper we describe an infrastructure for query answering over
distributed ontologies on the Semantic Web. This infrastructure
addresses (i) the coordination of multiple nodes using metadata
about the provided resources managed in a decentralized registry and
(ii) the mediation between heterogeneous ontologies via an
expressive mapping formalism along with corresponding reasoning
algorithms for query answering. Our approach is based on a virtual
integration that exhibits a semantics as if all ontologies were
integrated locally. Practically, the distributed ontologies still
reside on the remote peers, and only the parts relevant for
answering the query need to be retrieved to the local node.
Experimental evaluations with the implementation in KAONp2p show
that the approach is very promising, as the performance of query
answering is essentially dominated by the size of the data, and only
slightly affected by the degree of distribution and heterogeneity.
Download: Media:2007_1342_Haase_A_Decentralized_1.pdf
Semantic Web Infrastructure, Peer-to-Peer, Ontologiemanagement