3225 search results - page 323 / 645 » Query Optimization by Stored Queries |
164
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CIKM
2004
Springer
16 years 2 days ago
2004
Springer
We examine the problem of retrieving the top-m ranked items from a large collection, randomly distributed across an n-node system. In order to retrieve the top m overall, we must ...
195
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BIOCOMP
2007
15 years 8 months ago
2007
Low-Complexity Regions (LCRs) of biological sequences are the main source of false positives in similarity searches for biological sequence databases. We consider the problem of ï...
166
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SIGMOD
2010
ACM
15 years 5 months ago
2010
ACM
Virtually all histograms store for each bucket the number of distinct values it contains and their average frequency. In this paper, we question this paradigm. We start out by inv...
174
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WWW
2011
ACM
15 years 1 months ago
2011
ACM
Data about everything is readily available on the web—but often only accessible through elaborate user interactions. For automated decision support, extracting that data is esse...
184
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VLDB
1994
ACM
15 years 10 months ago
1994
ACM
Full-text information retrieval systems have traditionally been designed for archival environments. They often provide little or no support for adding new documents to an existing...