Improving GANs using optimal transport

OpenAI Blog Papers

Summary

OT-GAN introduces a novel GAN variant using optimal transport combined with energy distance in an adversarially learned feature space to improve training stability and image generation quality. The method demonstrates state-of-the-art results on benchmark problems with stable training using large mini-batches.

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# Improving GANs using optimal transport Source: [https://openai.com/index/improving-gans-using-optimal-transport/](https://openai.com/index/improving-gans-using-optimal-transport/) ## Abstract We present Optimal Transport GAN \(OT\-GAN\), a variant of generative adversarial nets minimizing a new metric measuring the distance between the generator distribution and the data distribution\. This metric, which we call mini\-batch energy distance, combines optimal transport in primal form with an energy distance defined in an adversarially learned feature space, resulting in a highly discriminative distance function with unbiased mini\-batch gradients\. Experimentally we show OT\-GAN to be highly stable when trained with large mini\-batches, and we present state\-of\-the\-art results on several popular benchmark problems for image generation\.

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