721 search results - page 110 / 145 » Nile: A Query Processing Engine for Data Streams |
127
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PODS
2010
ACM
15 years 9 months ago
2010
ACM
We give the first optimal algorithm for estimating the number of distinct elements in a data stream, closing a long line of theoretical research on this problem begun by Flajolet...
178
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CORR
2004
Springer
15 years 4 months ago
2004
Springer
Analyzing and controlling large distributed services under a wide range of conditions is difficult. Yet these capabilities are essential to a number of important development and o...
136
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WWW
2007
ACM
16 years 4 months ago
2007
ACM
In recent years, there has been a prevalence of search engines being employed to find useful information in the Web as they efficiently explore hyperlinks between web pages which ...
197
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VLDB
2007
ACM
16 years 4 months ago
2007
ACM
This paper presents two extensions for XQuery. The first extension allows the definition and processing of different kinds of windows over an input sequence; i.e., tumbling, slidi...
170
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CLEF
2009
Springer
15 years 5 months ago
2009
Springer
Log data constitute a relevant aspect in the evaluation process of the quality of a search engine and the quality of a multilingual search service; log data can be used to study t...