https://en.wikipedia.org/wiki/Kernel_method
:
MNIST database
https://en.wikipedia.org/wiki/Gaussian_function
:
https://en.wikipedia.org/wiki/Gaussian_random_field
:
https://en.wikipedia.org/wiki/Kernel_regression
:
https://en.wikipedia.org/wiki/Kriging
:
https://en.wikipedia.org/wiki/Eigenvectors
:
Principal component analysis