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Anomaly detection is a difficult problem in many areas and has recently been subject to a lot of attention. Classifying unseen data as anomalous is a challenging matter. Latest proposed methods rely on Generative Adversarial Networks (GANs)…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Pierrick Chatillon , Coloma Ballester

The detection of computer-generated text is an area of rapidly increasing significance as nascent generative models allow for efficient creation of compelling human-like text, which may be abused for the purposes of spam, disinformation,…

计算与语言 · 计算机科学 2022-10-05 Evan Crothers , Nathalie Japkowicz , Herna Viktor , Paula Branco

Adversarial attacks aim to confound machine learning systems, while remaining virtually imperceptible to humans. Attacks on image classification systems are typically gauged in terms of $p$-norm distortions in the pixel feature space. We…

机器学习 · 计算机科学 2019-06-07 Ayon Sen , Xiaojin Zhu , Liam Marshall , Robert Nowak

We investigate the vulnerability of computer-vision-based signal classifiers to adversarial perturbations of their inputs, where the signals and perturbations are subject to physical constraints. We consider a scenario in which a source and…

机器学习 · 计算机科学 2024-02-28 Robert L. Bassett , Austin Van Dellen , Anthony P. Austin

Most adversarial attacks and defenses focus on perturbations within small $\ell_p$-norm constraints. However, $\ell_p$ threat models cannot capture all relevant semantics-preserving perturbations, and hence, the scope of robustness…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Marcel Kollovieh , Lukas Gosch , Marten Lienen , Yan Scholten , Leo Schwinn , Stephan Günnemann

Deep learning has emerged as a powerful approach for malware detection, demonstrating impressive accuracy across various data representations. However, these models face critical limitations in real-world, non-stationary environments where…

密码学与安全 · 计算机科学 2026-04-24 Pawan Acharya , Lan Zhang

Machine learning has been adopted for efficient cooperative spectrum sensing. However, it incurs an additional security risk due to attacks leveraging adversarial machine learning to create malicious spectrum sensing values to deceive the…

密码学与安全 · 计算机科学 2024-02-15 Wenwei Zhao , Xiaowen Li , Shangqing Zhao , Jie Xu , Yao Liu , Zhuo Lu

Marked temporal point processes (MTPPs) have been shown to be extremely effective in modeling continuous time event sequences (CTESs). In this work, we present adversarial attacks designed specifically for MTPP models. A key criterion for a…

机器学习 · 计算机科学 2025-01-22 Pritish Chakraborty , Vinayak Gupta , Rahul R , Srikanta J. Bedathur , Abir De

As the name suggests, image spam is spam email that has been embedded in an image. Image spam was developed in an effort to evade text-based filters. Modern deep learning-based classifiers perform well in detecting typical image spam that…

密码学与安全 · 计算机科学 2021-03-10 Andy Phung , Mark Stamp

Propensity score matching is a common tool for adjusting for observed confounding in observational studies, but is known to have limitations in the presence of unmeasured confounding. In many settings, researchers are confronted with…

统计方法学 · 统计学 2017-12-08 Georgia Papadogeorgou , Christine Choirat , Corwin Zigler

Recent work has suggested post-hoc explainers might be ineffective for detecting spurious correlations in Deep Neural Networks (DNNs). However, we show there are serious weaknesses with the existing evaluation frameworks for this setting.…

State-of-the-art deep neural networks (DNNs) are highly effective in solving many complex real-world problems. However, these models are vulnerable to adversarial perturbation attacks, and despite the plethora of research in this domain, to…

机器学习 · 计算机科学 2019-09-10 Gil Fidel , Ron Bitton , Asaf Shabtai

Deep learning has greatly improved visual recognition in recent years. However, recent research has shown that there exist many adversarial examples that can negatively impact the performance of such an architecture. This paper focuses on…

计算机视觉与模式识别 · 计算机科学 2017-10-30 Xin Li , Fuxin Li

Multi-target detection (MTD) is the problem of estimating an image from a large, noisy measurement that contains randomly translated and rotated copies of the image. Motivated by the single-particle cryo-electron microscopy technology, we…

信号处理 · 电气工程与系统科学 2023-12-15 Alon Zabatani , Shay Kreymer , Tamir Bendory

Recent advancements in diffusion models have been leveraged to address inverse problems without additional training, and Diffusion Posterior Sampling (DPS) (Chung et al., 2022a) is among the most popular approaches. Previous analyses…

计算机视觉与模式识别 · 计算机科学 2025-06-04 Tongda Xu , Xiyan Cai , Xinjie Zhang , Xingtong Ge , Dailan He , Ming Sun , Jingjing Liu , Ya-Qin Zhang , Jian Li , Yan Wang

Deep generative models are promising in detecting novel cyber-physical attacks, mitigating the vulnerability of Cyber-physical systems (CPSs) without relying on labeled information. Nonetheless, these generative models face challenges in…

密码学与安全 · 计算机科学 2023-11-07 Haili Sun , Yan Huang , Lansheng Han , Cai Fu , Hongle Liu , Xiang Long

Tree ensembles are powerful models that are widely used. However, they are susceptible to adversarial examples, which are examples that purposely constructed to elicit a misprediction from the model. This can degrade performance and erode a…

机器学习 · 计算机科学 2022-06-28 Laurens Devos , Wannes Meert , Jesse Davis

Deep Neural Networks have been shown to be vulnerable to various kinds of adversarial perturbations. In addition to widely studied additive noise based perturbations, adversarial examples can also be created by applying a per pixel spatial…

计算机视觉与模式识别 · 计算机科学 2021-09-03 Ayberk Aydin , Deniz Sen , Berat Tuna Karli , Oguz Hanoglu , Alptekin Temizel

While several feature scoring methods are proposed to explain the output of complex machine learning models, most of them lack formal mathematical definitions. In this study, we propose a novel definition of the feature score using the…

机器学习 · 统计学 2018-07-12 Satoshi Hara , Kouichi Ikeno , Tasuku Soma , Takanori Maehara

Despite being effective in many application areas, Deep Neural Networks (DNNs) are vulnerable to being attacked. In object recognition, the attack takes the form of a small perturbation added to an image, that causes the DNN to misclassify,…

机器学习 · 计算机科学 2025-01-14 T. Windeatt