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This work addresses the efficiency concern on inferring a nonlinear contextual bandit when the number of arms $n$ is very large. We propose a neural bandit model with an end-to-end training process to efficiently perform bandit algorithms…

Machine Learning · Computer Science 2022-02-21 Yun Da Tsai , Shou De Lin

Deep neural network based speaker recognition systems can easily be deceived by an adversary using minuscule imperceptible perturbations to the input speech samples. These adversarial attacks pose serious security threats to the speaker…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-02 Monisankha Pal , Arindam Jati , Raghuveer Peri , Chin-Cheng Hsu , Wael AbdAlmageed , Shrikanth Narayanan

Gait recognition plays a vital role in human identification since gait is a unique biometric feature that can be perceived at a distance. Although existing gait recognition methods can learn gait features from gait sequences in different…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Yiqun Liu , Yi Zeng , Jian Pu , Hongming Shan , Peiyang He , Junping Zhang

Current gait recognition methodologies generally necessitate retraining when encountering new datasets. Nevertheless, retrained models frequently encounter difficulties in preserving knowledge from previous datasets, leading to a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Jingjie Wang , Shunli Zhang , Xiang Wei , Senmao Tian

Recently, video-based action recognition methods using convolutional neural networks (CNNs) achieve remarkable recognition performance. However, there is still lack of understanding about the generalization mechanism of action recognition…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Jaehui Hwang , Huan Zhang , Jun-Ho Choi , Cho-Jui Hsieh , Jong-Seok Lee

Deep neural networks have demonstrated remarkable effectiveness across a wide range of tasks such as semantic segmentation. Nevertheless, these networks are vulnerable to adversarial attacks that add imperceptible perturbations to the input…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Kira Maag , Roman Resner , Asja Fischer

This paper presents a novel deep learning framework for human trajectory prediction and detecting social group membership in crowds. We introduce a generative adversarial pipeline which preserves the spatio-temporal structure of the…

Computer Vision and Pattern Recognition · Computer Science 2018-12-20 Tharindu Fernando , Simon Denman , Sridha Sridharan , Clinton Fookes

Anomaly detection in time-series data is a critical challenge with significant implications for network security. Recent quantum machine learning approaches, such as quantum kernel methods and variational quantum circuits, have shown…

Machine Learning · Computer Science 2025-10-31 Wajdi Hammami , Soumaya Cherkaoui , Jean-Frederic Laprade , Ola Ahmad , Shengrui Wang

Automatic Speech Recognition services (ASRs) inherit deep neural networks' vulnerabilities like crafted adversarial examples. Existing methods often suffer from low efficiency because the target phases are added to the entire audio sample,…

Sound · Computer Science 2022-02-14 Yuantian Miao , Chao Chen , Lei Pan , Jun Zhang , Yang Xiang

An adversarial attack is an exploitative process in which minute alterations are made to natural inputs, causing the inputs to be misclassified by neural models. In the field of speech recognition, this has become an issue of increasing…

Sound · Computer Science 2018-09-13 Krishan Rajaratnam , Kunal Shah , Jugal Kalita

Generative Adversarial Networks (GANs) have shown immense potential in fields such as text and image generation. Only very recently attempts to exploit GANs to statistical-mechanics models have been reported. Here we quantitatively test…

Statistical Mechanics · Physics 2024-05-07 Daniele Lanzoni , Olivier Pierre-Louis , Francesco Montalenti

Despite their unmatched performance, deep neural networks remain susceptible to targeted attacks by nearly imperceptible levels of adversarial noise. While the underlying cause of this sensitivity is not well understood, theoretical…

Machine Learning · Computer Science 2020-12-01 George Cazenavette , Calvin Murdock , Simon Lucey

EEG-based brainprint recognition with deep learning models has garnered much attention in biometric identification. Yet, studies have indicated vulnerability to adversarial attacks in deep learning models with EEG inputs. In this paper, we…

Cryptography and Security · Computer Science 2024-07-02 Hangjie Yi , Yuhang Ming , Dongjun Liu , Wanzeng Kong

As time series classification (TSC) gains prominence, ensuring robust TSC models against adversarial attacks is crucial. While adversarial defense is well-studied in Computer Vision (CV), the TSC field has primarily relied on adversarial…

Machine Learning · Computer Science 2025-05-06 Yi Han

Gait recognition is a biometric technology that recognizes the identity of humans through their walking patterns. Compared with other biometric technologies, gait recognition is more difficult to disguise and can be applied to the condition…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Ming Wang , Xianda Guo , Beibei Lin , Tian Yang , Zheng Zhu , Lincheng Li , Shunli Zhang , Xin Yu

Adversarial training is an effective approach to make deep neural networks robust against adversarial attacks. Recently, different adversarial training defenses are proposed that not only maintain a high clean accuracy but also show…

Machine Learning · Computer Science 2023-01-02 Muzammal Naseer , Salman Khan , Fatih Porikli , Fahad Shahbaz Khan

The use of gait for person identification has important advantages such as being non-invasive, unobtrusive, not requiring cooperation and being less likely to be obscured compared to other biometrics. Existing methods for gait recognition…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Adrian Cosma , Emilian Radoi

In this paper, we investigate the dynamics-aware adversarial attack problem in deep neural networks. Most existing adversarial attack algorithms are designed under a basic assumption -- the network architecture is fixed throughout the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 An Tao , Yueqi Duan , He Wang , Ziyi Wu , Pengliang Ji , Haowen Sun , Jie Zhou , Jiwen Lu

Generative adversarial networks (GANs) studies have grown exponentially in the past few years. Their impact has been seen mainly in the computer vision field with realistic image and video manipulation, especially generation, making…

Machine Learning · Computer Science 2021-07-26 Eoin Brophy , Zhengwei Wang , Qi She , Tomas Ward

Deep neural networks have been applied in wireless communications system to intelligently adapt to dynamically changing channel conditions, while the users are still under the threat of the malicious attacks due to the broadcasting property…

Information Theory · Computer Science 2025-05-02 Jianyuan Chen , Lin Zhang , Zuwei Chen , Yawen Chen , Hongcheng Zhuang