Keyphrases
- multiple kernel
- sparse representation based classification
- sparse coding
- face recognition
- linear combination
- dictionary learning
- sparse representation
- kernel methods
- multiple kernel learning
- support vector machine
- face images
- multiple features
- kernel learning
- distance metric learning
- feature vectors
- machine learning
- unsupervised learning
- natural images
- dimensionality reduction
- data analysis
- small number
- feature extraction