Keyphrases
- query processing
- database
- response time
- query expansion
- query evaluation
- range queries
- retrieval method
- relevance feedback
- data sources
- user queries
- retrieval systems
- user defined
- vector space
- data objects
- object retrieval
- complex queries
- database queries
- query execution
- retrieval accuracy
- web search engines
- similarity search
- data model
- relational databases
- data structure
- search engine