Keyphrases
- information retrieval
- test collection
- question answering
- retrieval effectiveness
- pseudo relevance feedback
- evaluation campaigns
- expert search
- ir evaluation
- database
- search tasks
- blog opinion retrieval
- trec web
- biomedical information retrieval
- ad hoc retrieval
- relevance feedback
- databases
- document retrieval
- query expansion
- short queries
- text classification
- information systems
- genetic algorithm
- trec blog track
- trec ad hoc