Keyphrases
- visual features
- pseudo relevance feedback
- relevance feedback
- image retrieval
- query expansion
- retrieval effectiveness
- document retrieval
- cbir systems
- language model
- image classification
- visual information
- visual content
- image search
- relevant documents
- relevance model
- image annotation
- average precision
- low level features
- visual appearance
- low level
- keywords
- tf idf
- semantic concepts
- term frequency
- semantic gap
- similarity measure
- query terms
- test collection
- information retrieval systems
- information retrieval
- image collections
- low level visual features
- natural language processing
- image content
- document collections