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» Guarded Open Answer Set Programming
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RULEML
2004
Springer
13 years 10 months ago
Semantic Web Reasoning with Conceptual Logic Programs
Abstract. We extend Answer Set Programming with, possibly infinite, open domains. Since this leads, in general, to undecidable reasoning, we restrict the syntax of programs, while...
Stijn Heymans, Davy Van Nieuwenborgh, Dirk Vermeir
AMW
2010
13 years 6 months ago
Query Rewriting under Non-Guarded Rules
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...
Andrea Calì, Georg Gottlob, Andreas Pieris
ECAI
2010
Springer
13 years 6 months ago
On Semantic Update Operators for Answer-Set Programs
Logic programs under the stable models semantics, or answer-set programs, provide an expressive rule based knowledge representation framework, featuring formal, declarative and wel...
Martin Slota, João Leite
LADS
2007
Springer
13 years 11 months ago
Facilitating Agent Development in Open Distributed Systems
One of the main reasons about the success of the Web is that many “regular users” are able to create Web pages that, using hyperlinks, incrementally extend both the size and th...
Mauro Gaspari, Davide Guidi
EDBT
2009
ACM
145views Database» more  EDBT 2009»
13 years 8 months ago
An efficient online auditing approach to limit private data disclosure
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...
Haibing Lu, Yingjiu Li, Vijayalakshmi Atluri, Jaid...