UCLA at TREC 2014 Clinical Decision Support Track: Exploring Language Models, Query Expansion, and Boosting.
Jean I. Garcia-GathrightFrank MengWilliam HsuPublished in: TREC (2014)
Keyphrases
- language model
- query expansion
- pseudo relevance feedback
- retrieval effectiveness
- test collection
- information retrieval
- biomedical information retrieval
- language modeling
- ad hoc retrieval
- retrieval model
- short queries
- n gram
- language modelling
- text retrieval
- document retrieval
- probabilistic model
- document level
- relevant documents
- query terms
- automatic query expansion
- relevance model
- content based retrieval
- vector space model
- retrieved documents
- relevance judgments
- query specific
- trec collections
- smoothing methods
- feature selection
- query expansion methods
- document ranking
- original query
- average precision
- retrieval systems
- expert search
- query translation
- pseudo feedback
- relevance feedback
- multimedia
- out of vocabulary