[MRG] Make partial_wasserstein, partial_wasserstein2 and entropic_partial_wasserstein work with backend #449
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Types of changes
The functions
partial_wasserstein
,partial_wasserstein2
andentropic_partial_wasserstein
have been adapted to work with any backend (not only numpy) and are tested with torch. In particular, backward passes through them are tested.Motivation and context / Related issue
The functions mentioned above did not leverage the
nx
backend.How has this been tested (if it applies)
Forward and backward passes of the functions mentioned are tested with torch.
PR checklist