Keyphrases
- query processing
- wide range
- database
- response time
- query expansion
- aggregate queries
- keywords
- relevance feedback
- query evaluation
- user queries
- query formulation
- multi dimensional
- similarity search
- range queries
- database queries
- boolean queries
- retrieval method
- complex queries
- efficient processing
- range data
- retrieval systems
- co occurrence
- data structure
- objective function
- information retrieval
- databases