Metropolis-Hastings Generative Adversarial Networks

Code

• github.com/uber-research/metropolis-hastings-gans
  OfficialIn paperpytorch★ 0
• github.com/fyumoto/MHGAN
  tf★ 0
• github.com/nardeas/MHGAN
  tf★ 0
• github.com/obryniarski/mh-gan-experiments
  pytorch★ 0

Abstract

We introduce the Metropolis-Hastings generative adversarial network (MH-GAN), which combines aspects of Markov chain Monte Carlo and GANs. The MH-GAN draws samples from the distribution implicitly defined by a GAN's discriminator-generator pair, as opposed to standard GANs which draw samples from the distribution defined only by the generator. It uses the discriminator from GAN training to build a wrapper around the generator for improved sampling. With a perfect discriminator, this wrapped generator samples from the true distribution on the data exactly even when the generator is imperfect. We demonstrate the benefits of the improved generator on multiple benchmark datasets, including CIFAR-10 and CelebA, using the DCGAN, WGAN, and progressive GAN.

Tasks

Reproductions