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An Efficient Light Solver for Querying the Semantic Web

TitleAn Efficient Light Solver for Querying the Semantic Web
Publication TypeConference Paper
Year of Publication2011
Authorsle Clément, Vianney, Deville Yves, and Solnon Christine
Conference NameInternational Conference on Principles and Practice of Constraint Programming (CP2011)
PublisherSpringer
Conference LocationPerugia, Italy
Abstract

The Semantic Web aims at building cross-domain and distributed databases across the Internet. SPARQL is a standard query language for such databases. Evaluating such queries is however NP-hard. We model SPARQL queries in a declarative way, by means of CSPs. A CP operational semantics is proposed. It can be used for a direct implementation in existing CP solvers. To handle large databases, we introduce a specialized and efficient light solver, Castor. Benchmarks show the feasibility and efficiency of the approach.

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