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» Tractable Query Answering over Ontologies with Datalog -
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SEMWEB
2009
Springer
15 years 3 months ago
A Decomposition-Based Approach to Optimizing Conjunctive Query Answering in OWL DL
Scalable query answering over Description Logic (DL) based ontologies plays an important role for the success of the Semantic Web. Towards tackling the scalability problem, we prop...
Jianfeng Du, Guilin Qi, Jeff Z. Pan, Yi-Dong Shen
GPC
2010
Springer
15 years 5 months ago
Distributed Island-Based Query Answering for Expressive Ontologies
Scalability of reasoning systems is one of the main criteria which will determine the success of Semantic Web systems in the future. The focus of recent work is either on (a) expre...
Sebastian Wandelt, Ralf Möller
AAAI
2007
15 years 1 months ago
Approximating OWL-DL Ontologies
Efficient query answering over ontologies is one of the most useful and important services to support Semantic Web applications. Approximation has been identified as a potential...
Jeff Z. Pan, Edward Thomas
AI
2010
Springer
14 years 11 months ago
Logic-based ontology comparison and module extraction, with an application to DL-Lite
We develop a formal framework for comparing different versions of ontologies, and apply it to ontologies formulated in terms of DL-Lite, a family of `lightweight' description...
Roman Kontchakov, Frank Wolter, Michael Zakharyasc...
DEXAW
2007
IEEE
160views Database» more  DEXAW 2007»
15 years 5 months ago
RDF and Logic: Reasoning and Extension
In this paper we explore embeddings of the various kinds of RDF entailment in F-Logic. We show that the embeddings of simple, RDF, and RDFS entailment, as well as a large fragment...
Jos de Bruijn, Stijn Heymans