Keyphrases
- query language
- query processing
- response time
- query logs
- web search engines
- database
- web queries
- data sources
- range queries
- information retrieval
- query formulation
- data sets
- aggregate queries
- efficient processing
- keyword queries
- database queries
- retrieval systems
- user queries
- complex queries
- data mining
- neural network
- databases
- probabilistic databases
- pre computed