Keyphrases
- information retrieval
- image database
- retrieval systems
- information retrieval systems
- multimedia databases
- query expansion
- retrieval accuracy
- efficient retrieval
- relevance feedback
- image retrieval
- visual similarity
- test collection
- retrieval method
- highly relevant
- semantic search
- semantic tags
- user contributed
- cost effective
- content based retrieval
- document retrieval
- language model
- query processing
- database systems
- search engine