Keyphrases
- sparse coding
- unsupervised learning
- sparse codes
- discriminative power
- dictionary learning
- sparse representation
- object category recognition
- image classification
- natural images
- feature extraction
- norm minimization
- visual recognition
- partial occlusion
- object recognition
- linear combination
- single image super resolution
- alternating optimization
- subspace learning
- person re identification
- sparsity constraints
- image patches
- generative model
- image representation
- sparse representation based classification
- visual words
- bayesian networks
- feature space
- pattern recognition
- machine learning
- discriminative dictionary
- ground truth
- active learning
- feature selection
- high dimensional
- knn
- semi supervised
- action recognition
- bag of words