Keyphrases
- relevance feedback
- query processing
- query expansion
- information retrieval
- ad hoc retrieval
- response time
- relevance judgments
- retrieval effectiveness
- data structure
- question answering
- database
- retrieval accuracy
- interactive query expansion
- query formulation
- query evaluation
- vector space
- keywords
- search queries
- database queries
- relevance assessments
- data sources
- retrieval systems
- user queries
- retrieval process
- pseudo relevance feedback
- test collection
- document collections
- information retrieval systems
- relevance judgements