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