265 search results - page 11 / 53 » Logical Queries over Views: Decidability and Expressiveness |
124
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DLOG
2011
14 years 1 months ago
2011
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...
101
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DLOG
2008
15 years 13 days ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
ER
2003
Springer
15 years 3 months ago
2003
Springer
Many Internet-based applications have adopted XML as the standard data exchange format. These XML data are typically stored in its native form, thus creating the need to present XM...
DALT
2009
Springer
15 years 1 months ago
2009
Springer
We propose a framework to compute the utility of a proposal w.r.t. a preference set in a negotiation process. In particular, we refer to preferences expressed as weighted formulas ...
107
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SSDBM
2009
IEEE
15 years 4 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...