Keyphrases
- user requests
- database
- response time
- query processing
- range queries
- vector space
- database queries
- relevance feedback
- user queries
- efficient processing
- query formulation
- query evaluation
- communication cost
- data sets
- boolean queries
- query result
- probabilistic model
- keywords
- data structure
- multi dimensional
- indexing techniques
- neural network
- query execution
- retrieval systems
- retrieval accuracy
- original query
- answering queries
- relational databases
- data sources