Keyphrases
- test collection
- information retrieval
- question answering
- retrieval effectiveness
- scientific databases
- pseudo relevance feedback
- ad hoc retrieval
- relevance feedback
- expert search
- blog opinion retrieval
- trec blog track
- biomedical information retrieval
- relevant documents
- learning to rank
- reuters corpus volume
- partial replication
- relevance judgments
- retrieval model
- case study
- relevance judgements
- ir evaluation
- query expansion
- information retrieval systems
- bayesian networks
- search engine