Keyphrases
- query processing
- database
- query evaluation
- query expansion
- user interaction
- data sources
- data structure
- vector space
- user queries
- query execution
- original query
- range queries
- query terms
- multi dimensional
- relevance feedback
- relational databases
- object retrieval
- aggregate queries
- answering queries
- retrieval systems
- access methods
- database queries
- keyword search
- response time
- databases