8763 search results - page 225 / 1753 » Querying Database Knowledge |
197
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TIME
2009
IEEE
16 years 6 days ago
2009
IEEE
—Past research on temporal databases has primarily focused on state-based representations and on relational query language extensions for such representations. This led to many d...
151
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MDM
2005
Springer
15 years 11 months ago
2005
Springer
In this paper we propose a query-driven approach for tuning the time/energy trade-off in sensor networks with mobile sensors. The tuning factors include re-positioning of mobile s...
162
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MOBIDE
2006
ACM
15 years 11 months ago
2006
ACM
The representation of moving objects in spatial database systems has become an important research topic in recent years. As it is not realistic to track and store the location of ...
263
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ICDE
2008
IEEE
16 years 6 months ago
2008
IEEE
We introduce a convoy query that retrieves all convoys from historical trajectories, each of which consists of a set of objects that travelled closely during a certain time period....
280
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ICDE
2007
IEEE
16 years 6 months ago
2007
IEEE
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between score and uncertainty makes traditio...