Keyphrases
- query processing
- database
- user queries
- response time
- three dimensional
- query evaluation
- database queries
- query expansion
- data structure
- keywords
- online learning
- search queries
- relevance feedback
- image database
- data sources
- image retrieval
- keyword search
- query execution
- complex queries
- range queries
- query terms
- game theory
- user defined
- worst case
- state space
- lower bound
- search engine
- databases