469 search results - page 40 / 94 » Cluster-based query expansion |
168
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VISUAL
1999
Springer
15 years 8 months ago
1999
Springer
Abstract. Unlike traditional database management systems, in multimedia databases that support content-based retrieval over multimedia objects, it is difficult for users to express...
123
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TREC
2004
15 years 5 months ago
2004
Web search engines exploit conjunctive queries and special ranking criteria which differ from the disjunctive queries typically used for ad-hoc retrieval. We wanted to asses the e...
139
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SIGIR
2010
ACM
15 years 4 months ago
2010
ACM
Query reformulation techniques based on query logs have recently proven to be effective for web queries. However, when initial queries have reasonably good quality, these techniqu...
151
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IPM
2007
15 years 4 months ago
2007
In recent years, there has been increased interest in topic-focused multi-document summarization. In this task, automatic summaries are produced in response to a specific informat...
137
Voted
SIGIR
2009
ACM
15 years 11 months ago
2009
ACM
Pseudo-relevance feedback (PRF) via query-expansion has been proven to be effective in many information retrieval (IR) tasks. In most existing work, the top-ranked documents from...