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7
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Is there a feature mapping for this kernel $k(x,y) = (\frac{\min(x,y)}{\max(x,y)})^2$?
The native Hilbert-space of $K^2$ is well known.
I assume the domain of $K$ is $\mathbb{R}^{>0}\times\mathbb{R}^{>0}.$ Note that:
$$ K(x,y)=\begin{cases}
\frac{x}{y} \text{ for } x\leq y\\
\frac{y}{x} …