Description Usage Arguments Value Examples
D2K
returns the values of the 2nd order derivative of the kernel
function at its argument(s).
1 |
z |
A vector or matrix containing where the kernel is evaluated. If it is a matrix each column is interpreted as a vector. |
type |
A character string specify the used kernel function. Current options are "Gaussian" and... |
If the input is a vector the vector D^{\otimes 2} K(z) will be returned. If it is a matrix a matrix D^{\otimes 2}K(z_1), …, D^{\otimes 2}K(z_m) will be returned, where z = [z_1, …, z_m].
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