Distributed Nonconvex Optimization for Sparse Representation.
Ying SunGesualdo ScutariPublished in: CoRR (2016)
Keyphrases
- sparse representation
- joint optimization
- dictionary learning
- norm minimization
- optimization problems
- sparse coding
- image classification
- random projections
- compressed sensing
- compressive sensing
- face recognition
- reconstruction error
- convex optimization
- orthogonal matching pursuit
- signal processing
- image representation
- negative matrix factorization
- image patches
- sparse reconstruction
- dimensionality reduction
- regularized least squares
- objective function
- sparsity constraints
- data sets
- sparse approximations
- pattern recognition
- low rank matrix recovery
- sparse learning
- high dimensional
- high dimensional data