Sciweavers

Share
CIKM
2011
Springer
8 years 7 months ago
Adaptive term frequency normalization for BM25
A key component of BM25 contributing to its success is its sub-linear term frequency (TF) normalization formula. The scale and shape of this TF normalization component is controll...
Yuanhua Lv, ChengXiang Zhai
ECIR
2011
Springer
8 years 10 months ago
Balancing Exploration and Exploitation in Learning to Rank Online
Abstract. As retrieval systems become more complex, learning to rank approaches are being developed to automatically tune their parameters. Using online learning to rank approaches...
Katja Hofmann, Shimon Whiteson, Maarten de Rijke
ICMCS
2009
IEEE
142views Multimedia» more  ICMCS 2009»
9 years 4 months ago
Rotation invariant curvelet features for texture image retrieval
Effective texture feature is an essential component in any content based image retrieval system. In the past, spectral features, like Gabor and wavelet, have shown superior retrie...
Md. Monirul Islam, Dengsheng Zhang, Guojun Lu
ECIR
2009
Springer
9 years 4 months ago
Studying Query Expansion Effectiveness
Query expansion is an effective technique in improving the retrieval performance for ad-hoc retrieval. However, query expansion can also fail, leading to a degradation of the retri...
Ben He, Iadh Ounis
SIGIR
2002
ACM
9 years 6 months ago
Risk minimization and language modeling in text retrieval dissertation abstract
tion Abstract ChengXiang Zhai (Advisor: John Lafferty) Language Technologies Institute School of Computer Science Carnegie Mellon University With the dramatic increase in online in...
ChengXiang Zhai
PR
2002
121views more  PR 2002»
9 years 6 months ago
Statistical correlation analysis in image retrieval
A statistical correlation model for image retrieval is proposed. This model captures the semantic relationships among images in a database from simple statistics of userprovided r...
Mingjing Li, Zheng Chen, HongJiang Zhang
COLING
2002
9 years 6 months ago
Investigating the Relationship between Word Segmentation Performance and Retrieval Performance in Chinese IR
It is commonly believed that word segmentation accuracy is monotonically related to retrieval performance in Chinese information retrieval. In this paper we show that, for Chinese...
Fuchun Peng, Xiangji Huang, Dale Schuurmans, Nick ...
ASC
2004
9 years 6 months ago
Clustering terms in the Bayesian network retrieval model: a new approach with two term-layers
The retrieval performance of an information retrieval system usually increases when it uses the relationships among the terms contained in a given document collection. However, th...
Luis M. de Campos, Juan M. Fernández-Luna, ...
PRL
2006
119views more  PRL 2006»
9 years 7 months ago
Exploring the use of latent topical information for statistical Chinese spoken document retrieval
Information retrieval which aims to provide people with easy access to all kinds of information is now becoming more and more emphasized. However, most approaches to information r...
Berlin Chen
TREC
2007
9 years 8 months ago
York University at TREC 2007: Genomics Track
Our Genomics experiments in this year mainly focus on improving the passage retrieval performance in the biomedical domain. We address this problem by constructing different inde...
Xiangji Huang, Damon Sotoudeh-Hosseinii, Hashmat R...
books