Keyphrases
- query expansion
- retrieval effectiveness
- information retrieval systems
- information retrieval
- pseudo relevance feedback
- language modeling
- text retrieval
- relevance feedback
- language model
- relevant documents
- ad hoc retrieval
- automatic query expansion
- improving search
- retrieval model
- original query
- vocabulary mismatch
- interactive query expansion
- web corpora
- trec genomics track
- term selection
- document ranking
- passage retrieval
- model for information retrieval
- query expansion methods
- probabilistic retrieval model
- ranked retrieval
- initial query
- question answering
- active learning