448 search results - page 41 / 90 » Directly optimizing evaluation measures in learning to rank |
ISPD
2005
ACM
15 years 3 months ago
2005
ACM
In this paper we introduce the concept of zero-change transformations to quantify the suboptimality of existing placers. Given a netlist and its placement from a placer, we formal...
SIGIR
2009
ACM
15 years 4 months ago
2009
ACM
Crawl selection policy has a direct influence on Web search effectiveness, because a useful page that is not selected for crawling will also be absent from search results. Yet th...
MIR
2005
ACM
15 years 3 months ago
2005
ACM
Concept drifting is an important and challenging research issue in the field of machine learning. This paper mainly addresses the issue of semantic concept drifting in time series...
BMCBI
2007
14 years 9 months ago
2007
Background: An important step in annotation of sequenced genomes is the identification of transcription factor binding sites. More than a hundred different computational methods h...
ICCV
2009
IEEE
16 years 2 months ago
2009
IEEE
Image auto-annotation is an important open problem in
computer vision. For this task we propose TagProp, a discriminatively
trained nearest neighbor model. Tags of test
images a...