549 search results - page 59 / 110 » Data Expiration and Aggregate Queries |
184
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ICDE
2008
IEEE
16 years 1 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...
MUE
2007
IEEE
15 years 6 months ago
2007
IEEE
With the developments of related techniques in telecommunication and computer sciences, wireless sensor networks have been used more and more widely. While sensor nodes in wireles...
100
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DOLAP
2005
ACM
15 years 1 months ago
2005
ACM
We propose a new functional framework for modeling, querying and reasoning about OLAP databases. The framework represents data (data cubes and dimensional hierarchies) and queryin...
DEXA
2009
Springer
15 years 6 months ago
2009
Springer
Semantic Web technologies facilitate data integration over a large number of sources with decentralised and loose coordination, ideally leading to interlinked datasets which descri...
CIKM
2005
Springer
15 years 5 months ago
2005
Springer
In this paper, we propose a novel energy-efficient approach, a localized routing tree (LRT) coupled with a route redirection (RR) strategy, to support various types of queries. LR...