SciPy

scipy.spatial.distance.rogerstanimoto

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

Computes the Rogers-Tanimoto dissimilarity between two boolean 1-D arrays.

The Rogers-Tanimoto dissimilarity between two boolean 1-D arrays u and v, is defined as

\frac{R}
     {c_{TT} + c_{FF} + R}

where c_{ij} is the number of occurrences of \mathtt{u[k]} = i and \mathtt{v[k]} = j for k < n and R = 2(c_{TF} + c_{FT}).

Parameters :

u : (N,) array_like, bool

Input array.

v : (N,) array_like, bool

Input array.

Returns :

rogerstanimoto : double

The Rogers-Tanimoto dissimilarity between vectors u and v.