Keyphrases
- sparse representation
- dictionary learning
- image classification
- sparse coding
- signal processing
- face recognition
- eeg signals
- compressive sensing
- reconstruction error
- image representation
- pattern recognition
- negative matrix factorization
- image patches
- dimensionality reduction
- random projections
- support vector
- sparse approximations
- compressed sensing
- piecewise smooth
- joint optimization
- machine learning
- high dimensional data
- unsupervised learning
- training samples
- supervised learning
- support vector machine
- feature space
- feature extraction
- decision trees
- computer vision
- image reconstruction
- brain computer interface
- text classification
- image data
- high dimensional
- multiscale
- sparse learning