2546 search results - page 280 / 510 » Managing long-running queries |
180
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DOLAP
1998
ACM
15 years 11 months ago
1998
ACM
Star schema has been a typical model for both online transaction processing in traditional databases and online analytical processing in large data warehouses. In the star schema,...
181
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CIKM
2009
Springer
15 years 10 months ago
2009
Springer
In some retrieval situations, a system must search across multiple collections. This task, referred to as federated search, occurs for example when searching a distributed index o...
188
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SIGIR
2010
ACM
15 years 10 months ago
2010
ACM
Search trails comprising queries and Web page views are created as searchers engage in information-seeking activity online. During known-item search (where the objective may be to...
196
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SIGIR
2010
ACM
15 years 10 months ago
2010
ACM
In this paper, we present a novel image search system, image search by concept map. This system enables users to indicate not only what semantic concepts are expected to appear bu...
195
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CIKM
2006
Springer
15 years 10 months ago
2006
Springer
In an uncertain database, each data item is modeled as a range associated with a probability density function. Previous works for this kind of data have focussed on simple queries...