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Generative adversarial networks (GANs) are successfully used for image synthesis but are known to face instability during training. In contrast, probabilistic diffusion models (DMs) are stable and generate high-quality images, at the cost…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Edgardo Solano-Carrillo , Angel Bueno Rodriguez , Borja Carrillo-Perez , Yannik Steiniger , Jannis Stoppe

Generative adversial network (GAN) is a type of generative model that maps a high-dimensional noise to samples in target distribution. However, the dimension of noise required in GAN is not well understood. Previous approaches view GAN as a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Ziran Zhu , Tongda Xu , Ling Li , Yan Wang

Generative adversarial networks (GANs) have been shown to produce realistic samples from high-dimensional distributions, but training them is considered hard. A possible explanation for training instabilities is the inherent imbalance…

Machine Learning · Statistics 2018-07-12 Mehdi S. M. Sajjadi , Giambattista Parascandolo , Arash Mehrjou , Bernhard Schölkopf

Unconditional image generation has recently been dominated by generative adversarial networks (GANs). GAN methods train a generator which regresses images from random noise vectors, as well as a discriminator that attempts to differentiate…

Machine Learning · Computer Science 2018-12-24 Yedid Hoshen , Jitendra Malik

We study in this paper the rate of convergence for learning densities under the Generative Adversarial Networks (GAN) framework, borrowing insights from nonparametric statistics. We introduce an improved GAN estimator that achieves a faster…

Machine Learning · Statistics 2018-02-20 Tengyuan Liang

Despite an impressive performance from the latest GAN for generating hyper-realistic images, GAN discriminators have difficulty evaluating the quality of an individual generated sample. This is because the task of evaluating the quality of…

Image and Video Processing · Electrical Eng. & Systems 2019-12-03 Xiru Zhu , Fengdi Che , Tianzi Yang , Tzuyang Yu , David Meger , Gregory Dudek

Generative Adversarial Networks (GANs) are an elegant mechanism for data generation. However, a key challenge when using GANs is how to best measure their ability to generate realistic data. In this paper, we demonstrate that an intrinsic…

Machine Learning · Computer Science 2019-05-03 Sukarna Barua , Xingjun Ma , Sarah Monazam Erfani , Michael E. Houle , James Bailey

Generative Adversarial Networks (GANs) produce high-quality images but are challenging to train. They need careful regularization, vast amounts of compute, and expensive hyper-parameter sweeps. We make significant headway on these issues by…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Axel Sauer , Kashyap Chitta , Jens Müller , Andreas Geiger

Several dihedral angles prediction methods were developed for protein structure prediction and their other applications. However, distribution of predicted angles would not be similar to that of real angles. To address this we employed…

Biomolecules · Quantitative Biology 2018-03-30 Hyeongki Kim

Generative Adversarial Networks (GANs) have proven to be a powerful tool for generating realistic synthetic data. However, traditional GANs often struggle to capture complex relationships between features which results in generation of…

Machine Learning · Computer Science 2023-06-06 Srikrishna Iyer , Teng Teck Hou

Generative Adversarial Networks (GANs) are powerful generative models that achieved strong results, mainly in the image domain. However, the training of GANs is not trivial, presenting some challenges tackled by different strategies.…

Neural and Evolutionary Computing · Computer Science 2021-02-26 Victor Costa , Nuno Lourenço , João Correia , Penousal Machado

Generative models have made immense progress in recent years, particularly in their ability to generate high quality images. However, that quality has been difficult to evaluate rigorously, with evaluation dominated by heuristic approaches…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Y. Alex Kolchinski , Sharon Zhou , Shengjia Zhao , Mitchell Gordon , Stefano Ermon

Generative adversarial networks (GANs) are successful deep generative models. GANs are based on a two-player minimax game. However, the objective function derived in the original motivation is changed to obtain stronger gradients when…

Machine Learning · Statistics 2016-11-10 Masatoshi Uehara , Issei Sato , Masahiro Suzuki , Kotaro Nakayama , Yutaka Matsuo

Generative Adversarial Networks (GANs) have been shown to produce realistically looking synthetic images with remarkable success, yet their performance seems less impressive when the training set is highly diverse. In order to provide a…

Machine Learning · Computer Science 2018-08-31 Matan Ben-Yosef , Daphna Weinshall

Neural samplers such as variational autoencoders (VAEs) or generative adversarial networks (GANs) approximate distributions by transforming samples from a simple random source---the latent space---to samples from a more complex distribution…

Machine Learning · Statistics 2018-02-09 Nutan Chen , Alexej Klushyn , Richard Kurle , Xueyan Jiang , Justin Bayer , Patrick van der Smagt

Text generation models are notoriously vulnerable to errors in the training data. With the wide-spread availability of massive amounts of web-crawled data becoming more commonplace, how can we enhance the robustness of models trained on a…

Computation and Language · Computer Science 2024-03-20 Tianjian Li , Haoran Xu , Philipp Koehn , Daniel Khashabi , Kenton Murray

Generative Adversarial Networks (GANs) have shown remarkable results in modeling complex distributions, but their evaluation remains an unsettled issue. Evaluations are essential for: (i) relative assessment of different models and (ii)…

In image generation, generative models can be evaluated naturally by visually inspecting model outputs. However, this is not always the case for graph generative models (GGMs), making their evaluation challenging. Currently, the standard…

Machine Learning · Computer Science 2022-04-29 Rylee Thompson , Boris Knyazev , Elahe Ghalebi , Jungtaek Kim , Graham W. Taylor

We present two new metrics for evaluating generative models in the class-conditional image generation setting. These metrics are obtained by generalizing the two most popular unconditional metrics: the Inception Score (IS) and the Fre'chet…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Yaniv Benny , Tomer Galanti , Sagie Benaim , Lior Wolf

The true distribution parameterizations of commonly used image datasets are inaccessible. Rather than designing metrics for feature spaces with unknown characteristics, we propose to measure GAN performance by evaluating on explicitly…

Machine Learning · Computer Science 2018-12-31 Shayne O'Brien , Matt Groh , Abhimanyu Dubey