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» On Conjunctive Query Answering in EL

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AAAI
2008

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Worst-case Optimal Conjunctive Query Answering for an Expressive Description Logic without Inverses

15 years 2 months ago

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Answering conjunctive queries (CQs) has been recognized as a key task for the usage of Description Logics (DLs) in a number of applications, and has thus been studied by many auth...

Magdalena Ortiz, Mantas Simkus, Thomas Eiter

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AAAI
2006

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Characterizing Data Complexity for Conjunctive Query Answering in Expressive Description Logics

15 years 1 months ago

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Description Logics (DLs) are the formal foundations of the standard web ontology languages OWL-DL and OWL-Lite. In the Semantic Web and other domains, ontologies are increasingly ...

Magdalena Ortiz, Diego Calvanese, Thomas Eiter

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DLOG
2000

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Answering Conjunctive Queries over DL Aboxes: A Preliminary Report

15 years 1 months ago

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Ian Horrocks, Sergio Tessaris

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