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» Information retrieval using hierarchical dirichlet processes
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IR
2006
15 years 5 months ago
Evolving local and global weighting schemes in information retrieval
This paper describes a method, using Genetic Programming, to automatically determine term weighting schemes for the vector space model. Based on a set of queries and their human de...
Ronan Cummins, Colm O'Riordan
IPM
2007
114views more  IPM 2007»
15 years 5 months ago
s-grams: Defining generalized n-grams for information retrieval
For European languages, n-gram has proved to be the cost effective alternative to morphological processing during indexing task and it has been studied and analyzed extensively us...
Anni Järvelin, Antti Järvelin, Kalervo J...
VLDB
1992
ACM
120views Database» more  VLDB 1992»
15 years 10 months ago
An Information-Retrieval Approach for Image Databases
The retrieval process in image database systems is inherently different from the retrieval processin traditional (recordoriented)databasesystems.While thelatter canbe consideredan...
Fausto Rabitti, Pasquale Savino
ICML
2008
IEEE
16 years 6 months ago
An HDP-HMM for systems with state persistence
The hierarchical Dirichlet process hidden Markov model (HDP-HMM) is a flexible, nonparametric model which allows state spaces of unknown size to be learned from data. We demonstra...
Emily B. Fox, Erik B. Sudderth, Michael I. Jordan,...
SIGIR
2010
ACM
15 years 9 months ago
Personalizing information retrieval for multi-session tasks: the roles of task stage and task type
Dwell time as a user behavior has been found in previous studies to be an unreliable predictor of document usefulness, with contextual factors such as the user’s task needing to...
Jingjing Liu, Nicholas J. Belkin