Keyphrases
- image database
- information retrieval systems
- information retrieval
- retrieval process
- retrieval model
- document retrieval
- retrieval systems
- learning algorithm
- sparse representation
- image retrieval
- test collection
- query expansion
- knn
- query terms
- text retrieval
- sparse coding
- flow field
- search engine
- training phase
- sparse data
- shape retrieval
- learning phase