562 search results - page 76 / 113 » Term Selection and Query Operations for Video Retrieval |
133
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WWW
2010
ACM
15 years 11 months ago
2010
ACM
Web crawlers are increasingly used for focused tasks such as the extraction of data from Wikipedia or the analysis of social networks like last.fm. In these cases, pages are far m...
159
Voted
TREC
2008
15 years 5 months ago
2008
This paper describes our participation in the 2008 TREC Blog track. Our system consists of 3 components: data preprocessing, topic retrieval, and opinion finding. In the topic ret...
124
Voted
CIKM
2009
Springer
15 years 10 months ago
2009
Springer
We introduce a new theoretical derivation, evaluation methods, and extensive empirical analysis for an automatic query expansion framework in which model estimation is cast as a r...
157
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SIGIR
2008
ACM
15 years 3 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...
128
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INFOVIS
2003
IEEE
15 years 9 months ago
2003
IEEE
The Informedia Digital Video Library user interface summarizes query results with a collage of representative keyframes. We present a user study in which keyframe occlusion caused...