Keyphrases
- information retrieval
- test collection
- retrieval effectiveness
- question answering
- relevance feedback
- blog opinion retrieval
- biomedical information retrieval
- pseudo relevance feedback
- information retrieval systems
- ir evaluation
- relevance judgments
- retrieval model
- artificial intelligence
- expert search
- language model
- retrieval systems
- relevant documents
- decision trees
- similarity measure
- relevance assessments
- ad hoc retrieval
- evaluation campaigns
- okapi bm
- learning algorithm
- neural network