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Human Activity Recognition (HAR), which uses data from Inertial Measurement Unit (IMU) sensors, has many practical applications in healthcare and assisted living environments. However, its use in real-world scenarios has been limited by the…

Artificial Intelligence · Computer Science 2025-07-08 Devin Y. De Silva , Sandareka Wickramanayake , Dulani Meedeniya , Sanka Rasnayaka

We study the Human Activity Recognition (HAR) task, which predicts user daily activity based on time series data from wearable sensors. Recently, researchers use end-to-end Artificial Neural Networks (ANNs) to extract the features and…

Neural and Evolutionary Computing · Computer Science 2022-12-06 Yuhang Li , Ruokai Yin , Hyoungseob Park , Youngeun Kim , Priyadarshini Panda

Human Activity Recognition (HAR), based on machine and deep learning algorithms is considered one of the most promising technologies to monitor professional and daily life activities for different categories of people (e.g., athletes,…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Florenc Demrozi , Cristian Turetta , Graziano Pravadelli

Previous work has shown that 3D point cloud classifiers can be vulnerable to adversarial examples. However, most of the existing methods are aimed at white-box attacks, where the parameters and other information of the classifiers are known…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Jinali Zhang , Yinpeng Dong , Jun Zhu , Jihong Zhu , Minchi Kuang , Xiaming Yuan

Adversarial attacks are a potential threat to machine learning models by causing incorrect predictions through imperceptible perturbations to the input data. While these attacks have been extensively studied in unstructured data like…

Machine Learning · Computer Science 2024-12-13 Zhipeng He , Chun Ouyang , Laith Alzubaidi , Alistair Barros , Catarina Moreira

Transferable adversarial attack is always in the spotlight since deep learning models have been demonstrated to be vulnerable to adversarial samples. However, existing physical attack methods do not pay enough attention on transferability…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Yu Zhang , Zhiqiang Gong , Yichuang Zhang , YongQian Li , Kangcheng Bin , Jiahao Qi , Wei Xue , Ping Zhong

Like many other tasks involving neural networks, Speech Recognition models are vulnerable to adversarial attacks. However recent research has pointed out differences between attacks and defenses on ASR models compared to image models.…

Cryptography and Security · Computer Science 2022-04-06 Raphael Olivier , Bhiksha Raj

Adversarial Transferability is an intriguing property - adversarial perturbation crafted against one model is also effective against another model, while these models are from different model families or training processes. To better…

Machine Learning · Computer Science 2021-11-09 Zhuolin Yang , Linyi Li , Xiaojun Xu , Shiliang Zuo , Qian Chen , Benjamin Rubinstein , Pan Zhou , Ce Zhang , Bo Li

The adversarial vulnerability of deep neural networks (DNNs) has drawn great attention due to the security risk of applying these models in real-world applications. Based on transferability of adversarial examples, an increasing number of…

Machine Learning · Computer Science 2023-11-03 Qizhang Li , Yiwen Guo , Wangmeng Zuo , Hao Chen

In this study, we delve into the robustness of neural network-based LiDAR point cloud tracking models under adversarial attacks, a critical aspect often overlooked in favor of performance enhancement. These models, despite incorporating…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Shengjing Tian , Xiantong Zhao , Yuhao Bian , Yinan Han , Bin Liu

Language models can be manipulated by adversarial attacks, which introduce subtle perturbations to input data. While recent attack methods can achieve a relatively high attack success rate (ASR), we've observed that the generated…

Computation and Language · Computer Science 2024-09-24 Yibo Wang , Xiangjue Dong , James Caverlee , Philip S. Yu

Human Action Recognition (HAR) aims to understand human behavior and assign a label to each action. It has a wide range of applications, and therefore has been attracting increasing attention in the field of computer vision. Human actions…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Zehua Sun , Qiuhong Ke , Hossein Rahmani , Mohammed Bennamoun , Gang Wang , Jun Liu

This paper explores the promising interplay between spiking neural networks (SNNs) and event-based cameras for privacy-preserving human action recognition (HAR). The unique feature of event cameras in capturing only the outlines of motion,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Siyuan Yang , Shilin Lu , Shizheng Wang , Meng Hwa Er , Zengwei Zheng , Alex C. Kot

The adversarial robustness of a model is its ability to resist adversarial attacks in the form of small perturbations to input data. Universal adversarial attack methods such as Fast Sign Gradient Method (FSGM) and Projected Gradient…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Xiaohu Lu , Hayder Radha

Many deep architectures and self-supervised pre-training techniques have been proposed for human activity recognition (HAR) from wearable multimodal sensors. Scaling laws have the potential to help move towards more principled design by…

Machine Learning · Computer Science 2025-05-22 Tom Hoddes , Alex Bijamov , Saket Joshi , Daniel Roggen , Ali Etemad , Robert Harle , David Racz

Human Activity Recognition (HAR) is considered a valuable research topic in the last few decades. Different types of machine learning models are used for this purpose, and this is a part of analyzing human behavior through machines. It is…

Machine Learning · Computer Science 2021-03-31 Jakaria Rabbi , Md. Tahmid Hasan Fuad , Md. Abdul Awal

Wearable-based Human Activity Recognition (HAR) is a key task in human-centric machine learning due to its fundamental understanding of human behaviours. Due to the dynamic nature of human behaviours, continual learning promises HAR systems…

Machine Learning · Computer Science 2024-01-05 Chi Ian Tang , Lorena Qendro , Dimitris Spathis , Fahim Kawsar , Akhil Mathur , Cecilia Mascolo

We consider human activity recognition (HAR) from wearable sensor data in manual-work processes, like warehouse order-picking. Such structured domains can often be partitioned into distinct process steps, e.g., packaging or transporting.…

Signal Processing · Electrical Eng. & Systems 2021-11-09 Stefan Lüdtke , Fernando Moya Rueda , Waqas Ahmed , Gernot A. Fink , Thomas Kirste

The transferability of adversarial examples allows for the attack on unknown deep neural networks (DNNs), posing a serious threat to many applications and attracting great attention. In this paper, we improve the transferability of…

Machine Learning · Computer Science 2025-10-16 Qizhang Li , Yiwen Guo , Xiaochen Yang , Wangmeng Zuo , Hao Chen

Human Activity Recognition (HAR) is a fundamental technology for numerous human - centered intelligent applications. Although deep learning methods have been utilized to accelerate feature extraction, issues such as multimodal data mixing,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Ying Yu , Siyao Li , Yixuan Jiang , Hang Xiao , Jingxi Long , Haotian Tang , Hanyu Liu , Chao Li