Keyphrases
- database
- query processing
- user queries
- response time
- range queries
- relevance feedback
- database queries
- data structure
- query evaluation
- search queries
- query expansion
- data sources
- retrieval systems
- query terms
- query formulation
- complex queries
- original query
- query refinement
- retrieval method
- cost model
- indexing techniques
- user defined
- database systems