721 search results - page 91 / 145 » Nile: A Query Processing Engine for Data Streams |
225
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ICDE
2005
IEEE
16 years 5 months 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...
236
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ICDE
2000
IEEE
16 years 5 months ago
2000
IEEE
Time-series data, which are a series of one-dimensional real numbers, have been studied in various database applications. In this paper, we extend the traditional similarity searc...
210
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SIGMOD
2005
ACM
16 years 4 months ago
2005
ACM
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
119
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VLDB
2004
ACM
15 years 9 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...
155
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DEBS
2008
ACM
15 years 6 months ago
2008
ACM
Several new Complex Event Processing (CEP) engines have been recently released, many of which are intended to be used in performance sensitive scenarios - like fraud detection, tr...