Sparse representation of vectors in lattices and semigroups.
Iskander AlievGennadiy AverkovJesús A. De LoeraTimm OertelPublished in: Math. Program. (2022)
Keyphrases
- sparse representation
- basis vectors
- dictionary learning
- sparse coding
- image classification
- face recognition
- random projections
- image patches
- signal processing
- compressed sensing
- joint optimization
- compressive sensing
- regularized least squares
- reconstruction error
- high dimensional data
- dimensionality reduction
- feature vectors
- negative matrix factorization
- sparse approximations
- piecewise smooth
- lower dimensional
- sparse reconstruction
- object tracking
- image representation
- sparse learning
- input data
- multiscale
- neural network
- norm minimization
- sparsity constraints
- sparse coefficients
- low dimensional