About the sinkhorn implementation

[bluenights]

Thanks for the code! I'm wondering where the entropy regulation parameter is implemented in the code.

[sarlinpe]

Sorry for the late reply. The matching descriptors are not normalized so the network has control over the scale of the Sinkhorn scores. This is redundant with the temperature parameter of the original Sinkhorn formulation, so we removed it. During the course of training, the scores are increasing in magnitude as the network gains confidence in its predictions.