This is documentation for an old release of SciPy (version 0.19.1). Read this page Search for this page in the documentation of the latest stable release (version 1.15.1).

scipy.spatial.distance.yule

scipy.spatial.distance.yule(u, v)

Computes the Yule dissimilarity between two boolean 1-D arrays.

The Yule dissimilarity is defined as

$$\frac{R}{c_{TT} * c_{FF} + \frac{R}{2}}$$

where $c_{ij}$ is the number of occurrences of $\mathtt{u[k]} = i$ and $\mathtt{v[k]} = j$ for $k < n$ and $R = 2.0 * c_{TF} * c_{FT}$.

Parameters:

u : (N,) array_like, bool

Input array.

v : (N,) array_like, bool

Input array.

Returns:

yule : double

The Yule dissimilarity between vectors u and v.