2063 search results - page 225 / 413 » Containment of Aggregate Queries |
173
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SSDBM
2008
IEEE
16 years 4 days ago
2008
IEEE
Random sampling is a popular technique for providing fast approximate query answers, especially in data warehouse environments. Compared to other types of synopses, random sampling...
170
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ICDE
2010
IEEE
16 years 5 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
151
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EDBT
2010
ACM
16 years 18 days ago
2010
ACM
This paper addresses a fundamental and challenging problem with broad applications: efficient processing of region-based promotion queries, i.e., to discover the top-k most inter...
172
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SIGIR
2010
ACM
15 years 9 months ago
2010
ACM
How does the web search behavior of “rich” and “poor” people differ? Do men and women tend to click on different results for the same query? What are some queries almost...
177
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CORR
2010
Springer
15 years 5 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...