# cupyx.scipy.spatial.distance.russellrao#

cupyx.scipy.spatial.distance.russellrao(u, v)[source]#

Compute the Russell-Rao distance between two 1-D arrays.

The Russell-Rao distance is defined as the proportion of elements in both u and v that are in the exact same position:

$d(u, v) = \frac{1}{n} \sum_{k=0}^n u_i = v_i$

where $$x = y$$ is one if $$x$$ is different from $$y$$ and zero otherwise.

Parameters
• u (array_like) – Input array of size (N,)

• v (array_like) – Input array of size (N,)

Returns

The Hamming distance between vectors u and v.

Return type

hamming (double)