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202
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DKE
2008
15 years 6 months ago
2008
We study an important data analysis operator, which extracts the k most important groups from data (i.e., the k groups with the highest aggregate values). In a data warehousing co...
204
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MOBIHOC
2004
ACM
16 years 6 months ago
2004
ACM
Clock synchronization is a crucial basic service in typical sensor networks, since the observations of distributed sensors more often than not need to be ordered ("a happened...
189
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ANSS
2000
IEEE
15 years 11 months ago
2000
IEEE
We present, in this paper, an algorithm which integrates flow control and dynamic load balancing in Time Warp. The algorithm is intended for use in a distributed memory environme...
291
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ICDE
2005
IEEE
16 years 8 months ago
2005
IEEE
We address the problem of executing continuous multiway join queries in unpredictable and volatile environments. Our query class captures windowed join queries in data stream syst...
288
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ICDE
2003
IEEE
16 years 8 months ago
2003
IEEE
We investigate algorithms for evaluating moving window joins over pairs of unbounded streams. We introduce a unit-time-basis cost model to analyze the expected performance of thes...