Keyphrases
- database
- query evaluation
- data structure
- query processing
- response time
- keywords
- relevance feedback
- query formulation
- query execution
- user queries
- keyword search
- query expansion
- world wide web
- internet technology
- original query
- internet users
- communication cost
- databases
- user defined
- range queries
- information retrieval systems
- multi dimensional
- photo collections
- query reformulation
- search engine
- aggregate queries
- metadata
- data sources
- efficient processing
- data warehouse
- result set
- retrieval method
- database queries
- search queries