SciPy

scipy.spatial.distance.russellrao

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

Computes the Russell-Rao dissimilarity between two boolean 1-D arrays.

The Russell-Rao dissimilarity between two boolean 1-D arrays, u and v, 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 : (N,) array_like, bool

Input array.

v : (N,) array_like, bool

Input array.

Returns :

russellrao : double

The Russell-Rao dissimilarity between vectors u and v.