6103 search results - page 417 / 1221 » Multimedia Retrieval Algorithmics |
140
Voted
SIGIR
2008
ACM
15 years 4 months ago
2008
ACM
We present a novel passage-based approach to re-ranking documents in an initially retrieved list so as to improve precision at top ranks. While most work on passage-based document...
115
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SIGIR
2010
ACM
15 years 3 months ago
2010
ACM
We introduce in this paper the family of information-based models for ad hoc information retrieval. These models draw their inspiration from a long-standing hypothesis in IR, name...
141
Voted
CIKM
2010
Springer
14 years 12 months ago
2010
Springer
Context-awareness for information retrieval is challenging problem as information about the users current situation is rarely available. If such information would be available, re...
161
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SIGIR
2011
ACM
14 years 7 months ago
2011
ACM
Query performance prediction is aimed at predicting the retrieval effectiveness that a query will achieve with respect to a particular ranking model. In this paper, we study quer...
147
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SIGIR
2011
ACM
14 years 7 months ago
2011
ACM
We reveal that the Okapi BM25 retrieval function tends to overly penalize very long documents. To address this problem, we present a simple yet effective extension of BM25, namel...