Keyphrases
- query processing
- answering queries
- approximate answers
- result set
- correct answers
- query language
- query result
- query evaluation
- efficient processing
- user defined
- user queries
- query formulation
- aggregate queries
- web snippets
- range queries
- response time
- database systems
- retrieval systems
- database
- database queries
- natural language queries
- query logs
- search queries
- answering questions
- natural language questions
- skyline queries
- query answering
- data management
- information retrieval systems
- databases