Keyphrases
- query expansion
- information retrieval systems
- pseudo relevance feedback
- retrieval effectiveness
- information retrieval
- relevance feedback
- relevant documents
- ad hoc retrieval
- language model
- language modeling
- text retrieval
- document ranking
- improving search
- original query
- ranked retrieval
- automatic query expansion
- retrieval model
- trec genomics track
- query expansion methods
- ranking scheme
- initial query
- query disambiguation
- biomedical information retrieval
- document collections
- document retrieval
- web corpora
- model for information retrieval
- probabilistic retrieval model
- term selection
- passage retrieval
- query translation
- cross lingual
- active learning
- digital libraries
- search engine