7576 search results - page 300 / 1516 » On Querying Ontologies and Databases |
191
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CORR
2012
Springer
14 years 2 months ago
2012
Springer
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic s...
197
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SSDBM
1998
IEEE
15 years 11 months ago
1998
IEEE
We address the issue of designing effective query languages for OLAP databases. The basis of our investigation is MD, a new data model for multidimensional databases that, unlike ...
227
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RIAO
2004
15 years 8 months ago
2004
This paper introduces a new approach to provide users with solutions to explore a domain via an information space. A key point in our approach is that information searching and ex...
176
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ECWEB
2005
Springer
16 years 6 days ago
2005
Springer
This work describes a novel strategy for designing an XPath processor that acts over an RDF mapping of XML. We use a modelmapping approach to represent instances of XML and XML Sch...
161
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FLAIRS
2004
15 years 8 months ago
2004
In this paper, we propose an agent-centric approach to resource description and selection in a multiagent information retrieval (IR). In the multiagent system, each agent learns f...