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Information-theoretic stochastic contrastive conditional GAN: InfoSCC-GAN
Vitaliy Kinakh · Mariia Drozdova · Guillaume Quétant · Tobias Golling · Slava Voloshynovskiy
Event URL: https://openreview.net/forum?id=uvWycxnB-Up »
Conditional generation is a subclass of generative problems where the output of the generation is conditioned by the attribute information. In this paper, we present a stochastic contrastive conditional generative adversarial network (InfoSCC-GAN) with an explorable latent space. The InfoSCC-GAN architecture is based on an unsupervised contrastive encoder built on the InfoNCE paradigm, an attribute classifier, and an EigenGAN generator. We propose a novel training method, based on generator regularization using external or internal attributes every $n$-th iteration, using a pre-trained contrastive encoder and a pre-trained classifier. The proposed InfoSCC-GAN is derived based on an information-theoretic formulation of mutual information maximization between the input data and latent space representation as well as latent space and generated data. Thus, we demonstrate a link between the training objective functions and the above information-theoretic formulation. The experimental results show that InfoSCC-GAN outperforms the "vanilla" EigenGAN in the image generation on several datasets. In addition, we investigate the impact of regularization techniques, discriminator architectures, and loss functions by performing ablation studies.Finally, we demonstrate that thanks to the EigenGAN generator, the proposed framework enjoys a stochastic generation in contrast to vanilla deterministic GANs yet with the independent training of encoder, classifier, and generator in contrast to existingframeworks.Code, experimental results, and demos are available \url{https://anonymous.4open.science/r/InfoSCC-GAN-D113}.

Author Information

Vitaliy Kinakh (University of Geneva)
Mariia Drozdova (University of Geneva)
Guillaume Quétant (University of Geneva)
Tobias Golling (University of Geneva)
Slava Voloshynovskiy (University of Geneva)

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