Keyphrases
- image database
- information retrieval
- image retrieval
- test collection
- retrieval systems
- sufficient conditions
- retrieval model
- query expansion
- retrieval framework
- sparse data
- efficient retrieval
- content based retrieval
- data sets
- information retrieval systems
- relevance feedback
- high dimensional
- shape retrieval
- neural network
- sparse representation
- user queries
- query processing
- multimedia
- metadata
- compressive sensing
- learning phase