Keyphrases
- black box
- black boxes
- white box
- database
- hybrid systems
- data retrieval
- target images
- query expansion
- state transition
- query evaluation
- response time
- indexing structure
- data sets
- white box testing
- rule extraction
- computationally expensive
- test cases
- relevance feedback
- query processing
- data structure
- range queries
- retrieval systems
- user queries
- index structure
- integration testing
- information retrieval