Sparse representation of precision matrices used in GMMs.
Branko BrkljacMarko JanevRadovan ObradovicDanilo RapaicNebojsa M. RalevicVladimir S. CrnojevicPublished in: Appl. Intell. (2014)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image classification
- gaussian mixture model
- face recognition
- compressed sensing
- compressive sensing
- sparse approximations
- negative matrix factorization
- reconstruction error
- random projections
- regularized least squares
- signal processing
- singular value decomposition
- image patches
- joint optimization
- neural network
- sparse coefficients
- dimensionality reduction
- image representation
- sparse reconstruction
- subspace learning
- sparse codes
- piecewise smooth
- higher order
- sparsity constraints
- semi supervised
- natural images
- generative model