Keyphrases
- information retrieval
- test collection
- question answering
- retrieval effectiveness
- biomedical information retrieval
- ad hoc retrieval
- pseudo relevance feedback
- blog opinion retrieval
- relevance feedback
- databases
- language model
- active learning
- multimedia
- artificial intelligence
- relevance judgments
- machine learning
- expert search
- evaluation campaigns
- okapi bm
- reuters corpus volume
- database