POT

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Nan in metric cost matrix causes 'segmentation fault core dumped' for GW solver

2

## Bug Hello! When there is a nan in the metric cost matrix (gromov_wasserstein or fused_gromov_wasserstein) I get a 'segmentation fault core dumped' error. ## Code sample ```python import numpy...

KrzakalaPaul

Improvements to pointwize and sampled GW variants

1

Currently several algorithms to compute or estimate Gromov-Wasserstein distance are provided, so the user has lots of freedom to experiment with algorithms which are appropriate to their particular distribution size,...

patrick-nicodemus

Sinkhorn_debiaised_barycenter seems too diffuse

3

## Describe the bug Theory ([Theorem 3 in this paper](http://proceedings.mlr.press/v119/janati20a/janati20a.pdf) ) tells us that the Sinkhorn barycenter between two Gaussian distribution with the same std $\sigma$ should be a Gaussian...

tlacombe

Bugs for GPU based ot.sinkhorn, and very slow speed for GPU based ot.sinkhorn2

1

Hi, I met a bug when I intend to use GPU to calculate sinkhorn OT: RuntimeError: CUDA error: device-side assert triggered CUDA kernel errors might be asynchronously reported at some...

HelloWorldLTY

The calculations of ot.unbalanced.sinkhorn_knopp_unbalanced seems incorrect in version 0.8.2

1

The calculations of ot.unbalanced.sinkhorn_knopp_unbalanced seems incorrect in version 0.8.2, which is not equal to the results of version 0.8.1.

Innse

Upstream Licencing conflict with GPL: POT and CVXOPT

2

## Describe the bug POT uses MIT, but has a requirement for CVXOPT, which uses [GPLv3](https://cvxopt.org/copyright.html) (Likely because it uses [GLPK](https://en.wikipedia.org/wiki/GNU_Linear_Programming_Kit)). This means that any upstream code cannot use an...

SarahG-579462

Implementation of Low Rank Gromov-Wasserstein

3

## Types of changes This PR is for the implementation of the Low Rank Gromov-Wasserstein solver. **Paper reference:** Scetbon, M., Peyré, G. & Cuturi, M. (2022). "Linear-Time GromovWasserstein Distances using...

laudavid

## Types of changes ## Motivation and context / Related issue ## How has this been tested (if it applies) ## PR checklist - [ ] I have read the...

rflamary

[WIP] Implementation of FUGW and UCOOT

4

## Types of changes This PR is dedicated to the implementation of Fused Unbalanced GW and (Fused) Unbalanced COOT. Since their structures, it is enough to write a common template,...

6Ulm

Too low tolerance in `test_solve_sample_methods`

2

## Describe the bug In `test_solve_sample_methods`, `ot.solve_sample` is called with the same random argument in the two first positions. The expectation is, of course, to find a solution of 0....

gspr