Sparse Representation of a Polytope and Recovery of Sparse Signals and Low-rank Matrices.
T. Tony CaiAnru ZhangPublished in: CoRR (2013)
Keyphrases
- sparse representation
- low rank matrices
- norm minimization
- signal processing
- dictionary learning
- sparse coding
- low rank
- compressive sensing
- face recognition
- high dimensional data
- random projections
- image classification
- compressed sensing
- dimensionality reduction
- reconstruction error
- sparse signal representation
- matrix completion
- image representation
- image patches
- sparse coefficients
- subspace learning
- singular value decomposition
- low rank matrix
- joint optimization
- negative matrix factorization
- low rank approximation
- data sets
- feature extraction
- kernel matrix
- object recognition
- pairwise
- small number
- convex optimization
- missing data