Keyphrases
- information retrieval
- image database
- information retrieval systems
- video search
- hierarchical structure
- image search
- text retrieval
- relevance feedback
- visual features
- retrieval model
- digital libraries
- higher level
- query expansion
- retrieval systems
- case based reasoning
- user friendly
- content based retrieval
- software tools
- lower level
- retrieval accuracy
- multimedia documents
- metadata