1168 search results - page 26 / 234 » Optimization strategies for complex queries |
182
Voted
PPDP
2010
Springer
15 years 3 months ago
2010
Springer
Given a set of Datalog rules, facts, and a query, answers to the query can be inferred bottom-up starting with the facts or top-down starting with the query. For efficiently answe...
200
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ICIP
2009
IEEE
15 years 3 months ago
2009
IEEE
Active learning is a framework that has attracted a lot of research interest in the content-based image retrieval (CBIR) in recent years. To be effective, an active learning syste...
125
Voted
ICDT
1999
ACM
15 years 9 months ago
1999
ACM
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
166
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CORR
2012
Springer
14 years 1 months ago
2012
Springer
We propose a novel mechanism for answering sets of counting queries under differential privacy. Given a workload of counting queries, the mechanism automatically selects a differ...
165
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PODS
2010
ACM
15 years 10 months ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...