2217 search results - page 225 / 444 » Rank-aware Query Optimization |
179
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DAWAK
2006
Springer
15 years 10 months ago
2006
Springer
We consider the problem of concurrent execution of multiple frequent itemset queries. If such data mining queries operate on overlapping parts of the database, then their overall I...
159
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BNCOD
1997
15 years 7 months ago
1997
With the substantial change of declarative query languages from plain SQL to the so-called \object SQLs", in particular OQL, there has surprisingly been not much change in the...
310
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ICDT
2009
ACM
16 years 7 months ago
2009
ACM
A technique called user views has recently been proposed to focus user attention on relevant information in response to provenance queries over workflow executions [1, 2]: Given u...
183
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SIGMOD
2010
ACM
15 years 11 months ago
2010
ACM
Fast query processing of complex objects, e.g. spatial or uncertain objects, depends on efficient spatial pruning of the objects’ approximations, which are typically minimum bou...
221
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ADHOCNOW
2008
Springer
15 years 7 months ago
2008
Springer
This paper presents a novel method for optimizing sliding window based continuous queries. We deal with two categories of aggregation operations: stepwise aggregation (e.g. COUNT) ...