Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image classification
- compressive sensing
- face recognition
- high dimensional data
- random projections
- signal processing
- negative matrix factorization
- compressed sensing
- test images
- image patches
- image representation
- reconstruction error
- regularized least squares
- dimensionality reduction
- joint optimization
- sparse reconstruction
- neural network
- manifold learning
- generative model
- image processing
- feature matching
- sparse learning