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SciPy

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scipy.spatial.distance.canberra

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

Computes the Canberra distance between two 1-D arrays.

The Canberra distance is defined as

d(u,v)=i|uivi||ui|+|vi|.
Parameters:

u : (N,) array_like

Input array.

v : (N,) array_like

Input array.

Returns:

canberra : double

The Canberra distance between vectors u and v.

Notes

When u[i] and v[i] are 0 for given i, then the fraction 0/0 = 0 is used in the calculation.