Keyphrases
- sparse representation based classification
- face recognition
- sparse representation
- dictionary learning
- sparse coding
- face images
- kernel discriminant analysis
- kernel pca
- feature space
- kernel function
- kernel methods
- recognition rate
- linear discriminant analysis
- discriminant analysis
- data mining
- natural images
- principal component analysis
- facial expressions
- pattern recognition
- support vector
- feature extraction
- neural network
- signal processing
- face detection
- high dimensional
- decision trees