Keyphrases
- norm minimization
- sparse representation
- convex optimization
- sparse coding
- image classification
- face recognition
- matrix completion
- unsupervised feature selection
- negative matrix factorization
- interior point methods
- feature extraction
- signal processing
- image representation
- image patches
- high dimensional data
- high resolution
- high dimensional
- nearest neighbor
- image processing
- higher order
- low resolution