Optimizing two stage bigram language models for IR.
Sara JavanmardiJianfeng GaoKuansan WangPublished in: WWW (2010)
Keyphrases
- language model
- information retrieval
- ad hoc information retrieval
- retrieval model
- query expansion
- ir models
- language modeling
- language model for information retrieval
- document ranking
- n gram
- document retrieval
- trec test collections
- term dependencies
- passage retrieval
- test collection
- retrieval effectiveness
- probabilistic model
- speech recognition
- language modeling framework
- query terms
- pseudo feedback
- language modelling
- text retrieval
- vector space model
- term weighting
- ad hoc retrieval
- smoothing methods
- statistical language models
- trec collections
- language modeling approaches
- context sensitive
- relevance model
- pseudo relevance feedback
- information retrieval systems
- retrieval systems
- search engine
- language models for information retrieval
- feature selection
- term proximity
- relevance feedback
- okapi bm
- relevance assessments
- document length
- evaluation measures
- translation model