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SIGIR
2008
ACM
13 years 10 months ago
Directly optimizing evaluation measures in learning to rank
One of the central issues in learning to rank for information retrieval is to develop algorithms that construct ranking models by directly optimizing evaluation measures used in i...
Jun Xu, Tie-Yan Liu, Min Lu, Hang Li, Wei-Ying Ma
SIGIR
2009
ACM
14 years 4 months ago
Portfolio theory of information retrieval
This paper studies document ranking under uncertainty. It is tackled in a general situation where the relevance predictions of individual documents have uncertainty, and are depen...
Jun Wang, Jianhan Zhu
APPML
2007
76views more  APPML 2007»
13 years 10 months ago
A distance bound for pseudospectra of matrix polynomials
In this note, we obtain a lower bound for the distance between the pseudospectrum of a matrix polynomial and a given point that lies out of it, generalizing a known result on pseu...
Panayiotis Psarrakos
TCBB
2008
117views more  TCBB 2008»
13 years 10 months ago
Consensus Genetic Maps as Median Orders from Inconsistent Sources
A genetic map is an ordering of genetic markers calculated from a population of known lineage. Although, traditionally, a map has been generated from a single population for each s...
Benjamin G. Jackson, Patrick S. Schnable, Srinivas...
FSS
2010
102views more  FSS 2010»
13 years 7 months ago
Measuring conflict and agreement between two prioritized knowledge bases in possibilistic logic
In this paper we investigate the relationship between two prioritized knowledge bases by measuring both the conflict and the agreement between them. First of all, a quantity of co...
Guilin Qi, Weiru Liu, David A. Bell