2514 search results - page 28 / 503 » On the Computation of Approximations of Database Queries |
246
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...
146
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VLDB
2005
ACM
15 years 11 months ago
2005
ACM
We study the problem of applying adaptive filters for approximate query processing in a distributed stream environment. We propose filter bound assignment protocols with the obj...
211
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EDBT
2009
ACM
15 years 9 months ago
2009
ACM
Range queries for querying the current and future positions of the moving objects have received growing interests in the research community. Existing methods, however, assume that...
193
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VLDB
2011
ACM
15 years 1 months ago
2011
ACM
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...
273
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ICDE
2006
IEEE
16 years 7 months ago
2006
IEEE
We consider the problem of creating a sample view of a database table. A sample view is an indexed, materialized view that permits efficient sampling from an arbitrary range query...