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mvpa2.kernels.sg.RbfSGKernel

class mvpa2.kernels.sg.RbfSGKernel(**kwargs)

Radial basis function: K(a,b) = exp(-||a-b||**2/sigma)

Initialize instance of RbfSGKernel

Parameters :

sigma :

Width/division parameter for gaussian kernel. (Default: 1)

normalizer_cls : sg.Kernel.CKernelNormalizer

Class to use as a normalizer for the kernel. Will be instantiated upon compute(). Only supported for shogun >= 0.6.5. By default (if left None) assigns IdentityKernelNormalizer to assure no normalization.

normalizer_args : None or list

If necessary, provide a list of arguments for the normalizer.