Keyphrases
- information retrieval
- test collection
- question answering
- context sensitive
- natural language processing
- domain specific
- retrieval effectiveness
- oracle database
- ad hoc retrieval
- semantic network
- wordnet
- database
- lexical information
- semantic relations
- pseudo relevance feedback
- trec blog track
- database administrators
- context specific
- lexical features
- databases
- relevance judgments
- word sense disambiguation
- database security
- document collections
- topic detection and tracking
- query expansion
- language model
- evaluation campaigns
- reuters corpus volume
- data model
- blog opinion retrieval