Supervised sparse representation with coefficients' group constraint.
Xin GuoZhi-Cheng ZhaoAnni CaiPublished in: BTAS (2012)
Keyphrases
- sparse representation
- sparsity constraints
- reconstruction error
- dictionary learning
- sparse coefficients
- basis vectors
- sparse coding
- image classification
- learned dictionary
- face recognition
- compressive sensing
- random projections
- compressed sensing
- signal processing
- linear combination
- negative matrix factorization
- high dimensional data
- joint optimization
- sparse approximations
- subspace learning
- machine learning
- regularized least squares
- image patches
- image representation
- piecewise smooth
- supervised learning
- sparse reconstruction
- dimensionality reduction
- norm minimization
- learning algorithm
- test images
- pattern recognition
- feature selection
- global constraints
- low rank
- semi supervised