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scipy.spatial.distance.dice¶

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

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

The Dice dissimilarity between u and v, is

$\frac{c_{TF} + c_{FT}} {2c_{TT} + c_{FT} + c_{TF}}$

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

Parameters :

u : (N,) ndarray, bool

Input 1-D array.

v : (N,) ndarray, bool

Input 1-D array.

Returns :

dice : double

The Dice dissimilarity between 1-D arrays u and v.