133 search results - page 9 / 27 » Learning-based Query Performance Modeling and Prediction |
128
Voted
PODS
1998
ACM
15 years 3 months ago
1998
ACM
We consider the problem of estimating CPU (distance computations) and I/O costs for processing range and k-nearest neighbors queries over metric spaces. Unlike the specific case ...
CIKM
2004
Springer
15 years 5 months ago
2004
Springer
Query expansion is a well-known technique that has been shown to improve average retrieval performance. This technique has not been used in many operational systems because of the...
108
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SIGIR
2008
ACM
14 years 11 months ago
2008
ACM
This paper addresses the issue of query refinement, which involves reformulating ill-formed search queries in order to enhance relevance of search results. Query refinement typica...
123
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ICDE
2005
IEEE
15 years 5 months ago
2005
IEEE
Many location-based applications require constant monitoring of k-nearest neighbor (k-NN) queries over moving objects within a geographic area. Existing approaches to this problem...
109
Voted
CIKM
2011
Springer
13 years 11 months ago
2011
Springer
Extracting information from web pages is an important problem; it has several applications such as providing improved search results and construction of databases to serve user qu...