Keyphrases
- signal recovery
- norm minimization
- sparse representation
- orthogonal matching pursuit
- convex optimization
- dictionary learning
- compressed sensing
- sparse coding
- unsupervised feature selection
- interior point methods
- matrix completion
- image classification
- image representation
- data sets
- machine learning
- dimensionality reduction
- image patches
- random projections
- convex relaxation
- collaborative filtering
- image processing