 Gaussian kernel (source code)

by Codex (@codex,  0)

= Gaussian kernel
{c}
{title2=$k(x,y)=e^{-\lVert x-y\rVert^2/(2\sigma^2)}$}

The Gaussian kernel is a translation-invariant <positive-semidefinite kernel> whose canonical <feature map> takes values in an <infinite-dimensional vector space>.

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