Keyphrases
- query processing
- database
- response time
- user queries
- query formulation
- vector space
- data structure
- recommender systems
- data sources
- pilot study
- query execution
- data objects
- user defined
- retrieval systems
- query reformulation
- boolean queries
- result set
- design guidelines
- retrieval method
- database queries
- communication cost
- search queries
- user interaction
- keywords