2987 search results - page 217 / 598 » Multiobjective Query Optimization |
130
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DAWAK
2003
Springer
15 years 7 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...
138
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SIGMOD
2012
ACM
13 years 4 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...
109
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DEBS
2007
ACM
15 years 5 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...
204
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SIGMOD
2006
ACM
16 years 2 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
133
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GECCO
2009
Springer
15 years 6 months ago
2009
Springer
The Portfolio Optimization problem consists of the selection of a group of assets to a long-term fund in order to minimize the risk and maximize the return of the investment. This...