Keyphrases
- query expansion
- expansion terms
- web corpora
- query terms
- term selection
- information retrieval systems
- information retrieval
- retrieval effectiveness
- probabilistic retrieval model
- term mismatch
- relevance model
- relevance feedback
- language model
- pseudo relevance feedback
- language modeling
- text retrieval
- retrieval model
- initial query
- automatic query expansion
- relevant documents
- improving search
- pseudo feedback
- ad hoc retrieval
- language modeling framework
- document retrieval
- query specific
- original query
- trec genomics track
- biomedical information retrieval
- term frequency
- text based image retrieval
- document ranking
- ranked retrieval
- query translation
- term weighting
- web search
- retrieved documents