Minimax Reconstruction Risk of Convolutional Sparse Dictionary Learning.
Shashank SinghBarnabás PóczosJian MaPublished in: AISTATS (2018)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- reconstruction error
- single image super resolution
- image super resolution
- sparsity constraints
- compressed sensing
- natural images
- compressive sensing
- unsupervised learning
- image classification
- group sparsity
- linear combination
- generative model
- sparse codes
- image patches
- object category recognition
- image representation
- high dimensional
- visual words
- dictionary learning for sparse
- face recognition
- high resolution
- feature space
- multiscale
- expectation maximization
- maximum likelihood
- probabilistic model
- sparse representation based classification