Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image classification
- compressive sensing
- face recognition
- reconstruction error
- image patches
- joint optimization
- compressed sensing
- random projections
- high dimensional data
- object tracking
- sparse reconstruction
- sparse approximations
- signal processing
- dimensionality reduction
- high dimensional
- negative matrix factorization
- regularized least squares
- piecewise smooth
- intrinsic image decomposition
- norm minimization
- database
- nonnegative matrix factorization
- data analysis
- pattern recognition
- machine learning
- data mining