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» Instance-Based Query Answering with Semantic Knowledge Bases
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DEXA
2007
Springer
131views Database» more  DEXA 2007»
13 years 11 months ago
Improving Semantic Query Answering
The retrieval problem is one of the main reasoning tasks for knowledge base systems. Given a knowledge base K and a concept C, the retrieval problem consists of finding all indivi...
Norbert Kottmann, Thomas Studer
PADL
2010
Springer
14 years 1 months ago
Implementing Query Answering for Hybrid MKNF Knowledge Bases
Abstract. Ontologies and rules are usually loosely coupled in knowledge representation formalisms. In fact, ontologies use open-world reasoning while the leading semantics for rule...
Ana Sofia Gomes, José Júlio Alferes,...
DLOG
2011
12 years 8 months ago
Query Answering over SROIQ Knowledge Bases with SPARQL
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
Ilianna Kollia, Birte Glimm, Ian Horrocks
FQAS
2004
Springer
91views Database» more  FQAS 2004»
13 years 10 months ago
On the Discovery of the Semantic Context of Queries by Game-Playing
In: Proceedings of the Sixth International Conference On Flexible Query Answering Systems (FQAS-04), Springer-Verlag LNAI 3055, pp. 203-216. c 2004 by Springer-Verlag. To model qu...
Alessandro Agostini, Paolo Avesani
FQAS
2004
Springer
104views Database» more  FQAS 2004»
13 years 10 months ago
Logic-Based Integration of Query Answering and Knowledge Discovery
Abstract. There is currently great interest in integrating knowledge discovery research into mainstream database systems. Such an enterprise is nontrivial because knowledge discove...
Marcelo A. T. Aragão, Alvaro A. A. Fernande...