Talk:Fréchet distance

External links modified (January 2018)

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Missing proof

This article would benefit a lot from including a proof that the Frechet distance is actually a distance in the topological sense. Somewhat surprisingly, I have not been able to find such a proof anywhere - showing that d(f,g)=0 if and only if f and g differ by a reparametrization is not trivial.

Frechet inception distance

This articles has a part about probability distance. I suggest rewriting it. Looks like:

• The mentioned probability distance is a special case of a Wasserstein metric. It is written where in a part Normal_distributions.
• The Frechet inception distance (FID) authors refer to this metric as a "Frechet distance" as it was created by Frechet [source] in 1957. Hence, they named their method with a Frechet's name .
• Nethertheless, the "Frechet distance" term is used for a curve distance, not probabilities metric. Looks like the authors of FID misused the "Frechet distance" term in the phrase:

The difference of two Gaussians (synthetic and real-world images) is measured by the Fréchet distance [16] also known as Wasserstein-2 distance [58] (https://arxiv.org/pdf/1706.08500.pdf)