24 search results - page 2 / 5 » Improving the estimation of relevance models using large ext... |
NLPRS
2001
Springer
13 years 9 months ago
2001
Springer
We describe a simple improvement to ngram language models where we estimate the distribution over closed-class (function) words separately from the conditional distribution of ope...
SIGIR
2010
ACM
13 years 8 months ago
2010
ACM
Pseudo-relevance feedback is an effective technique for improving retrieval results. Traditional feedback algorithms use a whole feedback document as a unit to extract words for ...
WWW
2008
ACM
14 years 5 months ago
2008
ACM
Contextual advertising supports much of the Web's ecosystem today. User experience and revenue (shared by the site publisher ad the ad network) depend on the relevance of the...
WSDM
2012
ACM
12 years 10 days ago
2012
ACM
Most standard information retrieval models use a single source of information (e.g., the retrieval corpus) for query formulation tasks such as term and phrase weighting and query ...
CVPR
2010
IEEE
2010
IEEE
Simultaneous surveillance camera calibration and foot-head homology estimation from human detections
13 years 10 months ago
We propose a novel method for automatic camera calibration and foot-head homology estimation by observing persons standing at several positions in the camera field of view. We de...