Keyphrases
- query processing
- response time
- user queries
- database
- data structure
- query evaluation
- retrieval method
- query execution
- planning problems
- heuristic search
- ai planning
- relevance feedback
- object retrieval
- query expansion
- range queries
- keywords
- original query
- efficient processing
- complex queries
- user defined
- database queries
- search queries
- query optimization
- information retrieval systems
- search engine
- data sets