Keyphrases
- image recognition
- elastic net
- linear discriminant analysis
- face recognition
- discriminant analysis
- regularization parameter
- principal component analysis
- null space
- projection matrix
- dimensionality reduction
- dimension reduction
- feature extraction
- small sample size
- image classification
- face images
- high dimensional data
- support vector machine svm
- kernel learning
- pattern recognition
- sparse representation
- support vector
- image restoration
- multiple kernel learning
- unsupervised learning
- random projections
- discriminative information
- cross validation
- data sets
- linear combination
- low dimensional
- neural network