Bases: object
Kernel function evaluated at x1 and x2.
Parameters : | x1 : numpy.ndarray with dtype='f8'
x2 : numpy.ndarray with dtype='f8'
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Returns : | K : numpy.ndarray
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Create a copy of the kernel.
Returns : | kernel : Kernel
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Hessian of the kernel function evaluated at x1 and x2.
Parameters : | x1 : numpy.ndarray with dtype='f8'
x2 : numpy.ndarray with dtype='f8'
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Returns : | H : numpy.ndarray
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Jacobian of the kernel function evaluated at x1 and x2.
Parameters : | x1 : numpy.ndarray with dtype='f8'
x2 : numpy.ndarray with dtype='f8'
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Returns : | J : numpy.ndarray
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