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Open AccessProceedings Article

Improved training of wasserstein GANs

TLDR
The authors proposed to penalize the norm of the gradient of the critic with respect to its input to improve the training stability of Wasserstein GANs and achieve stable training of a wide variety of GAN architectures with almost no hyperparameter tuning.
Abstract
Generative Adversarial Networks (GANs) are powerful generative models, but suffer from training instability. The recently proposed Wasserstein GAN (WGAN) makes progress toward stable training of GANs, but sometimes can still generate only poor samples or fail to converge. We find that these problems are often due to the use of weight clipping in WGAN to enforce a Lipschitz constraint on the critic, which can lead to undesired behavior. We propose an alternative to clipping weights: penalize the norm of gradient of the critic with respect to its input. Our proposed method performs better than standard WGAN and enables stable training of a wide variety of GAN architectures with almost no hyperparameter tuning, including 101-layer ResNets and language models with continuous generators. We also achieve high quality generations on CIFAR-10 and LSUN bedrooms.

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Constructing Unrestricted Adversarial Examples with Generative Models

TL;DR: The empirical results on the MNIST, SVHN, and CelebA datasets show that unrestricted adversarial examples can bypass strong adversarial training and certified defense methods designed for traditional adversarial attacks.
Book ChapterDOI

Text2Shape: Generating Shapes from Natural Language by Learning Joint Embeddings.

TL;DR: In this article, a method for generating colored 3D shapes from natural language descriptions is presented, which combines and extends learning by association and metric learning approaches to learn implicit cross-modal connections, and produces a joint representation that captures the many-to-many relations between language and physical properties of 3D shape.
Journal ArticleDOI

Generating Realistic Videos From Keyframes With Concatenated GANs

TL;DR: This paper proposes a novel, end-to-end approach to video generation using generative adversarial networks (GANs), which involves two concatenated GANs, one capturing motions and the other generating frame details.
Journal ArticleDOI

Deep Semisupervised Domain Generalization Network for Rotary Machinery Fault Diagnosis Under Variable Speed

TL;DR: A deep semisupervised domain generalization network (DSDGN) is proposed for rotary machinery fault diagnosis under variable speed, which can generalize the model to the fault diagnosis task under unseen speed.
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Neural 3D Morphable Models: Spiral Convolutional Networks for 3D Shape Representation Learning and Generation

TL;DR: This work introduces a novel graph convolutional operator, acting directly on the 3D mesh, that explicitly models the inductive bias of the fixed underlying graph, by enforcing consistent local orderings of the vertices of the graph, through the spiral operator.
References
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Dissertation

Learning Multiple Layers of Features from Tiny Images

TL;DR: In this paper, the authors describe how to train a multi-layer generative model of natural images, using a dataset of millions of tiny colour images, described in the next section.
Journal ArticleDOI

Simple Statistical Gradient-Following Algorithms for Connectionist Reinforcement Learning

TL;DR: This article presents a general class of associative reinforcement learning algorithms for connectionist networks containing stochastic units that are shown to make weight adjustments in a direction that lies along the gradient of expected reinforcement in both immediate-reinforcement tasks and certain limited forms of delayed-reInforcement tasks, and they do this without explicitly computing gradient estimates.
Posted Content

Unsupervised Representation Learning with Deep Convolutional Generative Adversarial Networks

TL;DR: This work introduces a class of CNNs called deep convolutional generative adversarial networks (DCGANs), that have certain architectural constraints, and demonstrates that they are a strong candidate for unsupervised learning.
Posted Content

Improved Techniques for Training GANs

TL;DR: In this article, the authors present a variety of new architectural features and training procedures that apply to the generative adversarial networks (GANs) framework and achieve state-of-the-art results in semi-supervised classification on MNIST, CIFAR-10 and SVHN.
Proceedings Article

Categorical Reparameterization with Gumbel-Softmax

TL;DR: Gumbel-Softmax as mentioned in this paper replaces the non-differentiable samples from a categorical distribution with a differentiable sample from a novel Gumbel softmax distribution, which has the essential property that it can be smoothly annealed into the categorical distributions.
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