Keyphrases
- information retrieval
- image retrieval
- image database
- retrieval accuracy
- signal processing
- query expansion
- efficient retrieval
- high accuracy
- indexing techniques
- document retrieval
- radar signal
- retrieval method
- content based retrieval
- test collection
- information retrieval systems
- retrieval model
- multimedia databases
- retrieval systems
- query formulation
- high speed
- relevance feedback
- frequency band
- dynamic characteristics
- radar images
- high quality