Robust Hierarchical and Sparse Representation of Natural Sounds in High-Dimensional Space.
Simon BrodeurJean RouatPublished in: NOLISP (2013)
Keyphrases
- sparse representation
- dictionary learning
- norm minimization
- sparse coding
- illumination variations
- compressive sensing
- image classification
- compressed sensing
- joint optimization
- face recognition
- high dimensional data
- regularized least squares
- image patches
- random projections
- sparsity constraints
- signal processing
- piecewise smooth
- dimensionality reduction
- image representation
- negative matrix factorization
- object tracking
- data mining
- sparse coefficients
- sparse approximations
- test images
- unsupervised learning
- high dimensional
- training set
- neural network
- reconstruction error
- singular value decomposition
- natural images
- robust face recognition
- semi supervised
- multiscale