Dictionary learning with the \({{\ell }_{1/2}}\) -regularizer and the coherence penalty and its convergence analysis.
Zhenni LiTakafumi HayashiShuxue DingYujie LiPublished in: Int. J. Mach. Learn. Cybern. (2018)
Keyphrases
- convergence analysis
- dictionary learning
- sparse representation
- sparse coding
- regularization term
- image classification
- global convergence
- total variation
- semi supervised
- image patches
- face recognition
- signal processing
- optimality conditions
- objective function
- dimensionality reduction
- high dimensional data
- convergence rate
- image representation
- maximum likelihood
- cost function
- data analysis
- image restoration
- neural network
- unsupervised learning
- higher order
- approximation methods
- machine learning