2514 search results - page 301 / 503 » On the Computation of Approximations of Database Queries |
275
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SIGMOD
2006
ACM
16 years 7 months ago
2006
ACM
The reverse k-nearest neighbor (RkNN) problem, i.e. finding all objects in a data set the k-nearest neighbors of which include a specified query object, is a generalization of the...
166
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PODS
2008
ACM
16 years 6 months ago
2008
ACM
We consider a fundamental flow maximization problem that arises during the evaluation of multiple overlapping queries defined on a data stream, in a heterogenous parallel environm...
233
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SIGMOD
1997
ACM
15 years 11 months ago
1997
ACM
Aggregation in traditional database systems is performed in batch mode: a query is submitted, the system processes a large volume of data over a long period of time, and, eventual...
152
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CORR
2002
Springer
15 years 6 months ago
2002
Springer
We address the problem of minimal-change integrity maintenance in the context of integrity constraints in relational databases. We assume that integrity-restoration actions are li...
194
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SSD
2007
Springer
16 years 26 days ago
2007
Springer
An uncertain geo-spatial dataset is a collection of geo-spatial objects that do not represent accurately real-world entities. Each object has a confidence value indicating how lik...