Keyphrases
- query expansion
- retrieval effectiveness
- information retrieval systems
- language model
- information retrieval
- text retrieval
- improving search
- relevant documents
- relevance feedback
- language modeling
- automatic query expansion
- retrieval model
- original query
- text categorization
- query translation
- model for information retrieval
- interactive query expansion
- pseudo relevance feedback
- retrieved documents
- ad hoc retrieval
- ranking scheme
- query expansion methods
- trec genomics track
- ranked retrieval
- query specific
- query terms
- semantic information
- retrieval systems
- web corpora
- multimedia