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This study delves into the application of Generative Adversarial Networks (GANs) within the context of imbalanced datasets. Our primary aim is to enhance the performance and stability of GANs in such datasets. In pursuit of this objective,…

Machine Learning · Computer Science 2023-12-11 Ali Anaissi , Yuanzhe Jia , Ali Braytee , Mohamad Naji , Widad Alyassine

Undirected graphical models are compact representations of joint probability distributions over random variables. To solve inference tasks of interest, graphical models of arbitrary topology can be trained using empirical risk minimization.…

Machine Learning · Computer Science 2020-10-23 Adarsh K. Jeewajee , Leslie P. Kaelbling

We introduce the GANformer, a novel and efficient type of transformer, and explore it for the task of visual generative modeling. The network employs a bipartite structure that enables long-range interactions across the image, while…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Drew A. Hudson , C. Lawrence Zitnick

Many existing conditional Generative Adversarial Networks (cGANs) are limited to conditioning on pre-defined and fixed class-level semantic labels or attributes. We propose an open set GAN architecture (OpenGAN) that is conditioned…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Luke Ditria , Benjamin J. Meyer , Tom Drummond

Generative adversarial networks (GANs) are innovative techniques for learning generative models of complex data distributions from samples. Despite remarkable recent improvements in generating realistic images, one of their major…

Machine Learning · Computer Science 2018-11-05 Zinan Lin , Ashish Khetan , Giulia Fanti , Sewoong Oh

Data from many real-world applications can be naturally represented by multi-view networks where the different views encode different types of relationships (e.g., friendship, shared interests in music, etc.) between real-world individuals…

Social and Information Networks · Computer Science 2019-09-04 Yiwei Sun , Suhang Wang , Tsung-Yu Hsieh , Xianfeng Tang , Vasant Honavar

We propose a framework for generating samples from a probability distribution that differs from the probability distribution of the training set. We use an adversarial process that simultaneously trains three networks, a generator and two…

Machine Learning · Computer Science 2021-02-10 Gabriele Di Cerbo , Ali Hirsa , Ahmad Shayaan

A generative adversarial network (GAN) is a class of machine learning frameworks designed by Goodfellow et al. in 2014. In the GAN framework, the generative model is pitted against an adversary: a discriminative model that learns to…

Machine Learning · Computer Science 2022-10-13 Lan V. Truong

Generative adversarial networks (GANs) learn a deep generative model that is able to synthesise novel, high-dimensional data samples. New data samples are synthesised by passing latent samples, drawn from a chosen prior distribution,…

Computer Vision and Pattern Recognition · Computer Science 2018-02-16 Antonia Creswell , Anil A Bharath

Generative Adversarial Networks (GANs) are a recent advancement in unsupervised machine learning. They are a cat-and-mouse game between two neural networks: [1] a discriminator network which learns to validate whether a sample is real or…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-23 Olivia Curtis , Tereasa G. Brainerd

Deep generative models based on Generative Adversarial Networks (GANs) have demonstrated impressive sample quality but in order to work they require a careful choice of architecture, parameter initialization, and selection of…

Machine Learning · Computer Science 2017-11-08 Kevin Roth , Aurelien Lucchi , Sebastian Nowozin , Thomas Hofmann

Modern scientific research and applications very often encounter "fragmentary data" which brings big challenges to imputation and prediction. By leveraging the structure of response patterns, we propose a unified and flexible framework…

Machine Learning · Computer Science 2022-03-10 Fang Fang , Shenliao Bao

Generative adversarial networks have been very successful in generative modeling, however they remain relatively challenging to train compared to standard deep neural networks. In this paper, we propose new visualization techniques for the…

Machine Learning · Computer Science 2020-04-28 Hugo Berard , Gauthier Gidel , Amjad Almahairi , Pascal Vincent , Simon Lacoste-Julien

Generative Adversarial Networks (GAN) is an adversarial model, and it has been demonstrated to be effective for various generative tasks. However, GAN and its variants also suffer from many training problems, such as mode collapse and…

Machine Learning · Computer Science 2021-07-20 Junjie Li , Junwei Zhang , Xiaoyu Gong , Shuai Lü

Generative adversarial networks (GANs) are deep neural networks that allow us to sample from an arbitrary probability distribution without explicitly estimating the distribution. There is a generator that takes a latent vector as input and…

Machine Learning · Computer Science 2021-06-22 Alper Ahmetoğlu , Ethem Alpaydın

Generative Adversarial Networks (GANs) are an arrange of two neural networks -- the generator and the discriminator -- that are jointly trained to generate artificial data, such as images, from random inputs. The quality of these generated…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Manel Mateos , Alejandro González , Xavier Sevillano

Generative Adversarial Networks (GANs) have made releasing of synthetic images a viable approach to share data without releasing the original dataset. It has been shown that such synthetic data can be used for a variety of downstream tasks…

Machine Learning · Computer Science 2020-12-15 Sumit Mukherjee , Yixi Xu , Anusua Trivedi , Juan Lavista Ferres

We extend and improve the work of Model Agnostic Anchors for explanations on image classification through the use of generative adversarial networks (GANs). Using GANs, we generate samples from a more realistic perturbation distribution, by…

Machine Learning · Statistics 2019-06-04 Kurtis Evan David , Harrison Keane , Jun Min Noh

Generative adversarial networks (GANs) are one of the most powerful generative models, but always require a large and balanced dataset to train. Traditional GANs are not applicable to generate minority-class images in a highly imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Gaofeng Huang , Amir H. Jafari

In this paper we address the abnormality detection problem in crowded scenes. We propose to use Generative Adversarial Nets (GANs), which are trained using normal frames and corresponding optical-flow images in order to learn an internal…

Computer Vision and Pattern Recognition · Computer Science 2017-09-01 Mahdyar Ravanbakhsh , Moin Nabi , Enver Sangineto , Lucio Marcenaro , Carlo Regazzoni , Nicu Sebe