Euclidean distance
= Euclidean distance
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The Euclidean distance between $x,y\in\mathbb R^d$ is
$$
\|x-y\|_2=\sqrt{\sum_{i=1}^d(x_i-y_i)^2}.
$$
= Euclidean distance
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The Euclidean distance between $x,y\in\mathbb R^d$ is
$$
\|x-y\|_2=\sqrt{\sum_{i=1}^d(x_i-y_i)^2}.
$$