552 search results - page 31 / 111 » Direct Optimization of Ranking Measures |
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SIGIR
2011
ACM
14 years 1 months ago
2011
ACM
Pseudo-relevance feedback has proven effective for improving the average retrieval performance. Unfortunately, many experiments have shown that although pseudo-relevance feedback...
BMCBI
2010
14 years 10 months ago
2010
Background: Affymetrix GeneChip microarrays are popular platforms for expression profiling in two types of studies: detection of differential expression computed by p-values of t-...
ECML
2007
Springer
15 years 4 months ago
2007
Springer
L1 regularization is effective for feature selection, but the resulting optimization is challenging due to the non-differentiability of the 1-norm. In this paper we compare state...
GECCO
2005
Springer
15 years 3 months ago
2005
Springer
We propose a selection scheme called Fitness-based Neighbor Selection (FNS) for multimodal optimization. The FNS is aimed for ill-scaled and locally multimodal domain, both found ...
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ICPR
2004
IEEE
15 years 11 months ago
2004
IEEE
Feature and structure selection is an important part of many classification problems. In previous papers, an approach called basis pursuit classification has been proposed which p...