A general datalog-based framework for tractable query answering over ontologies.

A general datalog-based framework for tractable query answering over ontologies.

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In this paper, we introduce a family of expressive extensions of Datalog, called Datalog±, as a new paradigm for query answering over ontologies. The Datalog± family admits existentially quantified variables in rule heads, and has suitable restrictions to ensure highly efficient ontology querying. W...

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Библиографические подробности
Главные авторы:	Calì, A, Gottlob, G, Lukasiewicz, T
Другие авторы:	Paredaens, J
Формат:	Journal article
Язык:	English
Опубликовано:	ACM 2009

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