SciPy

scipy.spatial.distance.sokalmichenerΒΆ

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

Computes the Sokal-Michener dissimilarity between two boolean 1-D arrays.

The Sokal-Michener dissimilarity between boolean 1-D arrays u and v, is defined as

\[\frac{R} {S + R}\]

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

Parameters:

u : (N,) array_like, bool

Input array.

v : (N,) array_like, bool

Input array.

Returns:

sokalmichener : double

The Sokal-Michener dissimilarity between vectors u and v.