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mvpa2.kernels.sg.PolySGKernel

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

Polynomial kernel: K(a,b) = (a*b.T + c)**degree c is 1 if and only if ‘inhomogenous’ is True

Initialize instance of PolySGKernel

Parameters :

degree :

Polynomial order of the kernel. (Default: 2)

inhomogenous :

Whether +1 is added within the expression. (Default: True)

use_normalization :

Optional normalization. (Default: False)

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.