2217 search results - page 210 / 444 » Rank-aware Query Optimization |
284
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EDBT
2011
ACM
14 years 10 months ago
2011
ACM
Equi-depth histograms represent a fundamental synopsis widely used in both database and data stream applications, as they provide the cornerstone of many techniques such as query ...
250
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ICDE
2006
IEEE
16 years 7 months ago
2006
IEEE
K-Anonymity has been proposed as a mechanism for protecting privacy in microdata publishing, and numerous recoding "models" have been considered for achieving kanonymity...
159
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DEBS
2007
ACM
15 years 10 months ago
2007
ACM
Queries for composite events typically involve the four complementary dimensions of event data, event composition, relationships between events (esp. temporal and causal), and acc...
283
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ICDE
2005
IEEE
16 years 7 months ago
2005
IEEE
Given a region qR and a future timestamp qT, a "range aggregate" query estimates the number of objects expected to appear in qR at time qT. Currently the only methods fo...
280
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ICDE
2000
IEEE
16 years 7 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...