2853 search results - page 36 / 571 » On the Efficiency of Provenance Queries |
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VLDB
2009
ACM
15 years 9 months ago
2009
ACM
In this paper, we study the problem of continuous monitoring of reverse k nearest neighbor queries. Existing continuous reverse nearest neighbor monitoring techniques are sensitive...
DAWAK
2004
Springer
15 years 1 months ago
2004
Springer
Abstract. In this paper, we present a fast algorithm to answer rangesum queries in OLAP data cubes. Our algorithm supports constanttime queries while maintaining sub-linear time up...
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MDM
2010
Springer
14 years 11 months ago
2010
Springer
A k-Range Nearest Neighbor (or kRNN for short) query in road networks finds the k nearest neighbors of every point on the road segments within a given query region based on the net...
DASFAA
2004
IEEE
15 years 1 months ago
2004
IEEE
Iceberg queries are a special case of SQL queries involving GROUP BY and HAVING clauses, wherein the answer set is small relative to the database size. We present here a performanc...
WWW
2008
ACM
15 years 10 months ago
2008
ACM
Finding the occurrences of structural patterns in XML data is a key operation in XML query processing. Existing algorithms for this operation focus almost exclusively on path-patt...