ott.geometry.costs.SqPNorm

class ott.geometry.costs.SqPNorm(p)

Squared p-norm of the difference of two vectors.

Uses custom implementation of norm to avoid NaN values when differentiating the norm of x-x.

Parameters:

p (float) – Power of the p-norm, \(\ge 1\).

Methods

all_pairs(x, y)	Compute matrix of all pairwise costs, including the norms.
barycenter(weights, xs)	Output barycenter of vectors.
h(z)	TI function acting on difference of \(x-y\) to output cost.
h_legendre(z)	Legendre transform of h().
h_transform(f[, solver])	Compute the h-transform of a concave function.
transport_map(g)	Get an optimal transport map for a concave function \(g\).
twist_operator(vec, dual_vec, variable)	Twist inverse operator of the cost function.