Feature map
= Feature map
A feature map sends $x$ to a vector $\phi(x)$ in a vector space with an <inner product> so that $k(x,y)=\langle\phi(x),\phi(y)\rangle$.
= Feature function
{synonym}
= Feature map
A feature map sends $x$ to a vector $\phi(x)$ in a vector space with an <inner product> so that $k(x,y)=\langle\phi(x),\phi(y)\rangle$.
= Feature function
{synonym}