Keyphrases
- database
- attribute values
- response time
- query evaluation
- user queries
- data sources
- query processing
- data objects
- relevance feedback
- retrieval systems
- database queries
- vector space
- range queries
- query formulation
- retrieval accuracy
- efficient processing
- deep web data sources
- original query
- boolean queries
- complex queries
- retrieval method
- keyword search
- indexing techniques
- query execution
- data management
- multi dimensional
- deep web
- query result
- data structure
- object retrieval
- information retrieval
- data mining