1039 search results - page 67 / 208 » Query reformulation with constraints |
154
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ICDCS
2005
IEEE
15 years 11 months ago
2005
IEEE
This paper presents MobiQuery, a spatiotemporal query service that allows mobile users to periodically gather information from their surrounding areas through a wireless sensor ne...
252
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...
139
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EDBT
2009
ACM
16 years 28 days ago
2009
ACM
Networks of sensors are used in many different fields, from industrial applications to surveillance applications. A common feature of these applications is the necessity of a mo...
162
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ICPADS
2008
IEEE
16 years 18 days ago
2008
IEEE
Existing solutions for top-k queries in wireless sensor networks mainly focused on energy efficiency and little attention has been paid to the response time to answer a top-k que...
159
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DLOG
2009
15 years 7 months ago
2009
Abstract. We present a family of expressive extensions of Datalog, called Datalog