Distributed nonconvex optimization for sparse representation.
Ying SunGesualdo ScutariPublished in: ICASSP (2017)
Keyphrases
- sparse representation
- joint optimization
- dictionary learning
- optimization problems
- norm minimization
- sparse coding
- convex optimization
- face recognition
- image classification
- compressed sensing
- image patches
- orthogonal matching pursuit
- high dimensional data
- reconstruction error
- compressive sensing
- signal processing
- negative matrix factorization
- piecewise smooth
- random projections
- regularized least squares
- image representation
- sparsity constraints
- objective function
- dimensionality reduction
- quadratic programming
- sparse learning
- sparse codes
- sparse approximations
- low rank matrix recovery
- pattern recognition
- feature extraction