Keyphrases
- query language
- query processing
- query evaluation
- response time
- user queries
- web search engines
- efficient processing
- database
- database queries
- query formulation
- dynamic programming
- complex queries
- search algorithm
- aggregate queries
- range queries
- query logs
- answering queries
- tabu search
- simulated annealing
- search queries
- query terms
- skyline queries
- data sources
- optimal solution
- search engine