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The vulnerability of Deep Neural Networks (DNNs) to adversarial examples has been confirmed. Existing adversarial defenses primarily aim at preventing adversarial examples from attacking DNNs successfully, rather than preventing their…

计算机视觉与模式识别 · 计算机科学 2023-03-09 Jinwei Wang , Hao Wu , Haihua Wang , Jiawei Zhang , Xiangyang Luo , Bin Ma

Adversarial purification using generative models demonstrates strong adversarial defense performance. These methods are classifier and attack-agnostic, making them versatile but often computationally intensive. Recent strides in diffusion…

机器学习 · 计算机科学 2026-04-10 Himanshu Singh , A V Subramanyam

Compared with traditional machine learning models, deep neural networks perform better, especially in image classification tasks. However, they are vulnerable to adversarial examples. Adding small perturbations on examples causes a…

计算机视觉与模式识别 · 计算机科学 2020-06-24 Zifei Zhang , Kai Qiao , Lingyun Jiang , Linyuan Wang , Bin Yan

Despite their groundbreaking performance for many generative modeling tasks, diffusion models have fallen short on discrete data domains such as natural language. Crucially, standard diffusion models rely on the well-established theory of…

机器学习 · 统计学 2024-06-10 Aaron Lou , Chenlin Meng , Stefano Ermon

We propose DiffSep, a new single channel source separation method based on score-matching of a stochastic differential equation (SDE). We craft a tailored continuous time diffusion-mixing process starting from the separated sources and…

音频与语音处理 · 电气工程与系统科学 2022-11-03 Robin Scheibler , Youna Ji , Soo-Whan Chung , Jaeuk Byun , Soyeon Choe , Min-Seok Choi

Although GAN-based methods have received many achievements in the last few years, they have not been entirelysuccessful in generating discrete data. The most crucial challenge of these methods is the difficulty of passing the gradientfrom…

机器学习 · 计算机科学 2020-10-16 Ehsan Montahaei , Danial Alihosseini , Mahdieh Soleymani Baghshah

Despite continuous improvements, precipitation forecasts are still not as accurate and reliable as those of other meteorological variables. A major contributing factor to this is that several key processes affecting precipitation…

大气与海洋物理 · 物理学 2022-11-09 Lucy Harris , Andrew T. T. McRae , Matthew Chantry , Peter D. Dueben , Tim N. Palmer

Visual artifacts remain a persistent challenge in diffusion models, even with training on massive datasets. Current solutions primarily rely on supervised detectors, yet lack understanding of why these artifacts occur in the first place. In…

计算机视觉与模式识别 · 计算机科学 2025-03-21 Yu Cao , Zengqun Zhao , Ioannis Patras , Shaogang Gong

Supervised machine learning algorithms play a crucial role in optical quality control within industrial production. These approaches require representative datasets for effective model training. However, while non-defective components are…

计算机视觉与模式识别 · 计算机科学 2026-02-02 Dennis Sprute , Hanna Senke , Holger Flatt

Score-based (denoising diffusion) generative models have recently gained a lot of success in generating realistic and diverse data. These approaches define a forward diffusion process for transforming data to noise and generate data by…

机器学习 · 计算机科学 2021-06-01 Alexia Jolicoeur-Martineau , Ke Li , Rémi Piché-Taillefer , Tal Kachman , Ioannis Mitliagkas

Today text classification models have been widely used. However, these classifiers are found to be easily fooled by adversarial examples. Fortunately, standard attacking methods generate adversarial texts in a pair-wise way, that is, an…

计算与语言 · 计算机科学 2020-03-24 Yankun Ren , Jianbin Lin , Siliang Tang , Jun Zhou , Shuang Yang , Yuan Qi , Xiang Ren

Score-based generative models (SGMs) are a recent breakthrough in generating fake images. SGMs are known to surpass other generative models, e.g., generative adversarial networks (GANs) and variational autoencoders (VAEs). Being inspired by…

机器学习 · 计算机科学 2022-06-20 Jayoung Kim , Chaejeong Lee , Yehjin Shin , Sewon Park , Minjung Kim , Noseong Park , Jihoon Cho

Generative adversarial networks (GANs) are challenging to train stably, and a promising remedy of injecting instance noise into the discriminator input has not been very effective in practice. In this paper, we propose Diffusion-GAN, a…

机器学习 · 计算机科学 2023-08-29 Zhendong Wang , Huangjie Zheng , Pengcheng He , Weizhu Chen , Mingyuan Zhou

Score-based modeling through stochastic differential equations (SDEs) has provided a new perspective on diffusion models, and demonstrated superior performance on continuous data. However, the gradient of the log-likelihood function, i.e.,…

机器学习 · 计算机科学 2023-03-07 Haoran Sun , Lijun Yu , Bo Dai , Dale Schuurmans , Hanjun Dai

Diffusion-based generative models learn to iteratively transfer unstructured noise to a complex target distribution as opposed to Generative Adversarial Networks (GANs) or the decoder of Variational Autoencoders (VAEs) which produce samples…

机器学习 · 计算机科学 2022-10-26 Sarthak Mittal , Guillaume Lajoie , Stefan Bauer , Arash Mehrjou

Recently, automatic speaker verification (ASV) based on deep learning is easily contaminated by adversarial attacks, which is a new type of attack that injects imperceptible perturbations to audio signals so as to make ASV produce wrong…

音频与语音处理 · 电气工程与系统科学 2024-07-10 Yibo Bai , Xiao-Lei Zhang , Xuelong Li

Dataset bias is a significant challenge in machine learning, where specific attributes, such as texture or color of the images are unintentionally learned resulting in detrimental performance. To address this, previous efforts have focused…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Donggeun Ko , Sangwoo Jo , Dongjun Lee , Namjun Park , Jaekwang Kim

In Virtual Reality (VR), adversarial attack remains a significant security threat. Most deep learning-based methods for physical and digital adversarial attacks focus on enhancing attack performance by crafting adversarial examples that…

计算机视觉与模式识别 · 计算机科学 2024-03-25 Qianyu Guo , Jiaming Fu , Yawen Lu , Dongming Gan

Being a form of biometric identification, the security of the speaker identification (SID) system is of utmost importance. To better understand the robustness of SID systems, we aim to perform more realistic attacks in SID, which are…

声音 · 计算机科学 2025-01-10 Qing Wang , Jixun Yao , Zhaokai Sun , Pengcheng Guo , Lei Xie , John H. L. Hansen

Recent developments in text-to-image models, particularly Stable Diffusion, have marked significant achievements in various applications. With these advancements, there are growing safety concerns about the vulnerability of the model that…

计算机视觉与模式识别 · 计算机科学 2024-01-18 Chenyu Zhang , Lanjun Wang , Anan Liu