Keyphrases
- query expansion
- information retrieval systems
- retrieval effectiveness
- pseudo relevance feedback
- text retrieval
- information retrieval
- language model
- relevance feedback
- language modeling
- relevant documents
- improving search
- ad hoc retrieval
- automatic query expansion
- biomedical information retrieval
- retrieval model
- ranking scheme
- query disambiguation
- interactive query expansion
- trec genomics track
- query translation
- query terms
- web corpora
- ranked retrieval
- vector space model
- query expansion methods
- feature space
- biomedical literature
- relevance model
- average precision
- pseudo feedback
- model for information retrieval
- vocabulary mismatch
- text categorization