49 search results - page 6 / 10 » Improve retrieval accuracy for difficult queries using negat... |
ECIR
2009
Springer
15 years 6 months ago
2009
Springer
Abstract. We present a new learning to rank framework for estimating context-sensitive term weights without use of feedback. Specifically, knowledge of effective term weights on ...
83
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TREC
2007
14 years 10 months ago
2007
Our Genomics experiments in this year mainly focus on improving the passage retrieval performance in the biomedical domain. We address this problem by constructing different inde...
TREC
2004
14 years 11 months ago
2004
UIUC participated in the HARD track in TREC 2004 and focused on the evaluation of a new method for identifying variable-length passages using HMMs. Most existing approaches to pas...
118
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SIGIR
2010
ACM
15 years 1 months ago
2010
ACM
As a principled approach to capturing semantic relations of words in information retrieval, statistical translation models have been shown to outperform simple document language m...
AAAI
2008
14 years 12 months ago
2008
Traditional information retrieval systems use query words to identify relevant documents. In difficult retrieval tasks, however, one needs access to a wealth of background knowled...