## Potential Flow Generator with $L_2$ Optimal Transport Regularity for Generative Models

Sep 25, 2019 Blind Submission readers: everyone Show Bibtex
• TL;DR: We propose a special generator with $L_2$ optimal transport regularity, which can be easily integrated into a wide range of generative models.
• Abstract: We propose a potential flow generator with $L_2$ optimal transport regularity, which can be easily integrated into a wide range of generative models including different versions of GANs and flow-based models. With up to a slight augmentation of the original generator loss functions, our generator is not only a transport map from the input distribution to the target one, but also the one with minimum $L_2$ transport cost. We show the correctness and robustness of the potential flow generator in several 2D problems, and illustrate the concept of proximity'' due to the $L_2$ optimal transport regularity. Subsequently, we demonstrate the effectiveness of the potential flow generator in image translation tasks with unpaired training data from the MNIST dataset and the CelebA dataset.