Keyphrases
- locality preserving projections
- subspace learning
- face recognition
- dimensionality reduction
- face images
- manifold learning
- human faces
- principal component analysis
- linear discriminant analysis
- face databases
- linear subspace
- subspace methods
- locally linear embedding
- discriminant analysis
- data representation
- riemannian manifolds
- multiple kernel
- facial expressions
- high dimensional
- machine learning
- sparse coding
- low dimensional
- feature extraction
- manifold structure
- data sets
- sparse representation
- recognition algorithm
- natural images
- image classification
- decision trees