scipy.spatial.distance.russellrao¶

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

Computes the Russell-Rao dissimilarity between two boolean n-vectors u and v, which is defined as

$\frac{n - c_{TT}} {n}$

where $c_{ij}$ is the number of occurrences of $\mathtt{u[k]} = i$ and $\mathtt{v[k]} = j$ for $k < n$ .

Parameters :

u : ndarray

An $n$ -dimensional vector.

v : ndarray

An $n$ -dimensional vector.

Returns :

d : double

The Russell-Rao dissimilarity between vectors u and v.