Keyphrases
- query processing
- wide range
- web search engines
- user queries
- query language
- query evaluation
- response time
- database
- genetic algorithm
- range queries
- databases
- query logs
- selection algorithm
- pre computed
- boolean queries
- query types
- web queries
- efficient processing
- query formulation
- selection strategy
- complex queries
- result set
- database queries
- data sources
- relational databases
- data sets