173 search results - page 33 / 35 » Continuous Query Processing of Spatio-temporal Data Streams ... |
DMSN
2009
ACM
15 years 6 months ago
2009
ACM
Generating a good execution plan for a declarative query has long been a central problem in data management research. With the rise in interest in wireless sensor networks (WSNs) ...
CIKM
2004
Springer
15 years 5 months ago
2004
Springer
We explore join optimizations in the presence of both timebased constraints (sliding windows) and value-based constraints (punctuations). We present the first join solution named...
VLDB
2004
ACM
15 years 5 months ago
2004
ACM
We consider the problem of estimating set-expression cardinality in a distributed streaming environment where rapid update streams originating at remote sites are continually tran...
CIDR
2007
15 years 1 months ago
2007
Data management in wireless sensor networks has been an area of significant research in recent years. Many existing sensor data management systems view sensor data as a continuou...
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ICDE
2005
IEEE
16 years 29 days ago
2005
IEEE
We consider the problem of efficiently computing the skyline against the most recent N elements in a data stream seen so far. Specifically, we study the n-of-N skyline queries; th...