949 search results - page 117 / 190 » Strategies for Querying Information Agents |
190
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TITB
2008
15 years 5 months ago
2008
To support large-scale biomedical research projects, organizations need to share person-specific genomic sequences without violating the privacy of their data subjects. In the past...
187
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ICDE
2010
IEEE
16 years 6 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...
150
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IJCAI
2007
15 years 7 months ago
2007
Effective representation of Web search results remains an open problem in the Information Retrieval community. For ambiguous queries, a traditional approach is to organize search ...
300
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ICDE
2005
IEEE
16 years 7 months ago
2005
IEEE
Query processing in traditional information management systems has moved from an exact match model to more flexible paradigms allowing cooperative retrieval by aggregating the dat...
155
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BTW
2005
Springer
15 years 12 months ago
2005
Springer
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...