Keyphrases
- metadata
- database
- query processing
- response time
- content based search
- digital libraries
- query evaluation
- databases
- learning objects
- textual descriptions
- heterogeneous databases
- database queries
- retrieval systems
- user queries
- information retrieval
- relevance feedback
- result set
- uniform access
- relational databases
- classical logic
- search interface
- statistical information
- query formulation
- query expansion
- web search
- modal logic
- data objects
- image database
- query terms
- learning resources
- multi dimensional