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Generative Adversarial Networks (GANs) are a widely-used tool for generative modeling of complex data. Despite their empirical success, the training of GANs is not fully understood due to the min-max optimization of the generator and…

机器学习 · 计算机科学 2022-08-23 Evan Becker , Parthe Pandit , Sundeep Rangan , Alyson K. Fletcher

In this work, we present GAROM, a new approach for reduced order modelling (ROM) based on generative adversarial networks (GANs). GANs have the potential to learn data distribution and generate more realistic data. While widely applied in…

机器学习 · 计算机科学 2025-01-31 Dario Coscia , Nicola Demo , Gianluigi Rozza

Deep reinforcement learning algorithms have succeeded in several challenging domains. Classic Online RL job schedulers can learn efficient scheduling strategies but often takes thousands of timesteps to explore the environment and adapt…

机器学习 · 计算机科学 2022-12-05 Vanamala Venkataswamy , Jake Grigsby , Andrew Grimshaw , Yanjun Qi

Discriminator plays a vital role in training generative adversarial networks (GANs) via distinguishing real and synthesized samples. While the real data distribution remains the same, the synthesis distribution keeps varying because of the…

计算机视觉与模式识别 · 计算机科学 2022-09-21 Ceyuan Yang , Yujun Shen , Yinghao Xu , Deli Zhao , Bo Dai , Bolei Zhou

Diffusion and flow matching policies offer expressive, multimodal action modeling, yet they are frequently unstable in online reinforcement learning (RL) due to intractable likelihoods and gradients propagating through long sampling chains.…

机器学习 · 计算机科学 2026-03-10 Chubin Zhang , Zhenglin Wan , Feng Chen , Fuchao Yang , Lang Feng , Yaxin Zhou , Xingrui Yu , Yang You , Ivor Tsang , Bo An

The main challenge of offline reinforcement learning, where data is limited, arises from a sequence of counterfactual reasoning dilemmas within the realm of potential actions: What if we were to choose a different course of action? These…

机器学习 · 计算机科学 2024-05-22 Yao Liu , Pratik Chaudhari , Rasool Fakoor

Thanks to their ability to learn flexible data-driven losses, Generative Adversarial Networks (GANs) are an integral part of many semi- and weakly-supervised methods for medical image segmentation. GANs jointly optimise a generator and an…

计算机视觉与模式识别 · 计算机科学 2023-06-29 Gabriele Valvano , Andrea Leo , Sotirios A. Tsaftaris

In an effort to address the training instabilities of GANs, we introduce a class of dual-objective GANs with different value functions (objectives) for the generator (G) and discriminator (D). In particular, we model each objective using…

机器学习 · 计算机科学 2023-05-04 Monica Welfert , Kyle Otstot , Gowtham R. Kurri , Lalitha Sankar

Generative Adversarial Networks (GANs) produce impressive results on unconditional image generation when powered with large-scale image datasets. Yet generated images are still easy to spot especially on datasets with high variance (e.g.…

计算机视觉与模式识别 · 计算机科学 2022-03-21 Ning Yu , Guilin Liu , Aysegul Dundar , Andrew Tao , Bryan Catanzaro , Larry Davis , Mario Fritz

Generative adversarial networks (GANs) are a method based on the training of two neural networks, one called generator and the other discriminator, competing with each other to generate new instances that resemble those of the probability…

人工智能 · 计算机科学 2023-02-21 Jordi de la Torre

Generative adversarial networks (GANs) learn a target probability distribution by optimizing a generator and a discriminator with minimax objectives. This paper addresses the question of whether such optimization actually provides the…

Offline-to-online Reinforcement Learning (O2O RL) aims to perform online fine-tuning on an offline pre-trained policy to minimize costly online interactions. Existing work used offline datasets to generate data that conform to the online…

机器学习 · 计算机科学 2025-08-12 Xiao Huang , Xu Liu , Enze Zhang , Tong Yu , Shuai Li

Can we use reinforcement learning to learn general-purpose policies that can perform a wide range of different tasks, resulting in flexible and reusable skills? Contextual policies provide this capability in principle, but the…

机器学习 · 计算机科学 2021-04-26 Soroush Nasiriany , Vitchyr H. Pong , Ashvin Nair , Alexander Khazatsky , Glen Berseth , Sergey Levine

Offline reinforcement learning (RL) enables policy learning from static data but often suffers from poor coverage of the state-action space and distributional shift problems. This problem can be addressed by allowing limited online…

机器学习 · 计算机科学 2026-02-03 Soumyadeep Roy , Shashwat Kushwaha , Ambedkar Dukkipati

Generative adversarial training can be generally understood as minimizing certain moment matching loss defined by a set of discriminator functions, typically neural networks. The discriminator set should be large enough to be able to…

机器学习 · 计算机科学 2018-02-27 Pengchuan Zhang , Qiang Liu , Dengyong Zhou , Tao Xu , Xiaodong He

Unsupervised learning has been extensively adopted to train deep neural networks (DNNs) for learning wireless resource allocation. Yet, the performance of DNNs is vulnerable to distribution shifts between training and test data, e.g.,…

信号处理 · 电气工程与系统科学 2026-03-03 Shengjie Liu , Chenyang Yang

We introduce Primal-Dual Wasserstein GAN, a new learning algorithm for building latent variable models of the data distribution based on the primal and the dual formulations of the optimal transport (OT) problem. We utilize the primal…

机器学习 · 统计学 2018-05-25 Mevlana Gemici , Zeynep Akata , Max Welling

Generative adversarial networks (GANs) can be interpreted as an adversarial game between two players, a discriminator D and a generator G, in which D learns to classify real from fake data and G learns to generate realistic data by…

机器学习 · 计算机科学 2018-09-10 Alexia Jolicoeur-Martineau

Semi-supervised learning methods based on generative adversarial networks (GANs) obtained strong empirical results, but it is not clear 1) how the discriminator benefits from joint training with a generator, and 2) why good semi-supervised…

机器学习 · 计算机科学 2017-11-06 Zihang Dai , Zhilin Yang , Fan Yang , William W. Cohen , Ruslan Salakhutdinov

Recently, transformation-based self-supervised learning has been applied to generative adversarial networks (GANs) to mitigate catastrophic forgetting in the discriminator by introducing a stationary learning environment. However, the…

机器学习 · 计算机科学 2022-01-19 Liang Hou , Huawei Shen , Qi Cao , Xueqi Cheng