Keyphrases
- electrical activity
- sparse representation
- dictionary learning
- sparse coding
- face recognition
- image classification
- compressed sensing
- random projections
- signal processing
- compressive sensing
- ecg signals
- image processing
- reconstruction error
- sparse approximations
- negative matrix factorization
- eeg signals
- high dimensional data
- image patches
- joint optimization
- sparse coefficients
- test images
- high resolution
- regularized least squares
- sparse reconstruction
- computer vision
- neural network
- image representation
- dimensionality reduction
- piecewise smooth
- data mining