Keyphrases
- text retrieval
- image retrieval
- external knowledge
- image content
- image features
- image database
- image classification
- information retrieval
- image representation
- multiscale
- k nearest neighbor
- document retrieval
- similarity measure
- low level
- query expansion
- image set
- low level features
- machine learning
- visual features
- high dimensional
- document collections
- retrieval systems
- image collections
- textual information
- effective retrieval