Keyphrases
- vector field
- manifold learning
- low dimensional
- dimensionality reduction
- optical flow
- nonlinear dimensionality reduction
- dimension reduction
- high dimensional
- semi supervised
- diffusion maps
- feature extraction
- laplacian eigenmaps
- velocity field
- flow field
- sparse representation
- feature space
- high dimensional data
- differential operators
- data sets
- geodesic distance
- preprocessing
- face recognition