Computes the Cosine distance between two n-vectors u and v, which is defined as
1 - \frac{u \cdot v} {||u||_2 ||v||_2}.
where u \cdot v is the dot product of u and v.
u : ndarray
An n-dimensional vector.
v : ndarray
d : double
The Cosine distance between vectors u and v.
scipy.spatial.distance.correlation
scipy.spatial.distance.dice
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