Keyphrases
- query language
- web search engines
- query processing
- response time
- query logs
- complex queries
- database
- efficient processing
- query formulation
- range queries
- probabilistic databases
- search queries
- data sources
- statistical databases
- database queries
- aggregate queries
- inverted index
- query answers
- query evaluation
- retrieval systems
- user queries
- web search
- data structure
- search engine
- databases
- data sets