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155
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SIGIR
2006
ACM
16 years 7 days ago
2006
ACM
Pseudo-relevance feedback has proven to be an effective strategy for improving retrieval accuracy in all retrieval models. However the performance of existing pseudo feedback meth...
167
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CLEF
2005
Springer
15 years 11 months ago
2005
Springer
We describe WebCLEF, the multilingual web track, that was introduced at CLEF 2005. We provide details of the tasks, the topics, and the results of WebCLEF participants. The mixed ...
262
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GIS
2008
ACM
16 years 7 months ago
2008
ACM
In this paper, we describe a methodology to estimate the geographic coverage of the web without the need for secondary knowledge or complex geo-tagging. This is achieved by random...
146
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CLEF
2006
Springer
15 years 10 months ago
2006
Springer
In this report we describe the approach of the University of Twente to the 2006 GeoCLEF task. It is based on retrieval by content and the subsequent filtering by geographical rele...
185
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COMPSAC
2002
IEEE
15 years 11 months ago
2002
IEEE
In this paper, an effective content-based visual image retrieval system is presented. This system consists of two main components: visual content extraction and indexing, and quer...