Keyphrases
- web search engines
- query processing
- query language
- range queries
- user queries
- database systems
- query evaluation
- efficient processing
- database
- view selection
- data sources
- multi dimensional
- data objects
- complex queries
- user defined
- retrieval systems
- response time
- query optimization
- web search
- query formulation
- information retrieval
- query types
- selection strategy
- pre computed
- statistical databases
- database queries
- selection algorithm
- search queries
- query logs
- data structure
- search engine
- learning algorithm
- genetic algorithm
- databases
- data sets