5130 search results - page 424 / 1026 » Constraint Query Languages |
222
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DASFAA
2010
IEEE
15 years 10 months ago
2010
IEEE
Abstract. Continuous monitoring of spatial queries has received significant research attention in the past few years. In this paper, we propose two efficient algorithms for the con...
160
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ADBIS
2010
Springer
15 years 8 months ago
2010
Springer
Abstract. The need for location-based services has motivated an important research effort in the efficient processing of location-dependent queries. Most of the existing approaches...
173
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AMAI
2005
Springer
15 years 6 months ago
2005
Springer
Mediator systems integrate distributed, heterogeneous and autonomous data sources, but their e ective use requires the solution of hard query optimization problems. This is usuall...
170
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WWW
2001
ACM
16 years 7 months ago
2001
ACM
Mobile devices will become an important platform for Internet access. Due to size constraints, in many circumstances speech is the most desirable mode of input. We have developed ...
217
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ESWS
2011
Springer
14 years 10 months ago
2011
Springer
The emergence of the Semantic Web has led to the creation of large semantic knowledge bases, often in the form of RDF databases. Improving the performance of RDF databases necessit...