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Sensor-based human activity recognition (HAR) has been an active research area, owing to its applications in smart environments, assisted living, fitness, healthcare, etc. Recently, deep learning based end-to-end training has resulted in…

Machine Learning · Computer Science 2024-01-19 Sourish Gunesh Dhekane , Thomas Ploetz

Various types of sensors can be used for Human Activity Recognition (HAR), and each of them has different strengths and weaknesses. Sometimes a single sensor cannot fully observe the user's motions from its perspective, which causes wrong…

Machine Learning · Computer Science 2024-08-05 Duc-Anh Nguyen , Cuong Pham , Nhien-An Le-Khac

Despite the recent advancements in robotics and machine learning (ML), the deployment of autonomous robots in our everyday lives is still an open challenge. This is due to multiple reasons among which are their frequent mistakes, such as…

Combining multiple modalities carrying complementary information through multimodal learning (MML) has shown considerable benefits for diagnosing multiple pathologies. However, the robustness of multimodal models to missing modalities is…

Machine Learning · Computer Science 2024-07-31 Hava Chaptoukaev , Vincenzo Marcianó , Francesco Galati , Maria A. Zuluaga

Radio-Frequency (RF)-based Human Activity Recognition (HAR) rises as a promising solution for applications unamenable to techniques requiring computer visions. However, the scarcity of labeled RF data due to their non-interpretable nature…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Yuxuan Weng , Guoquan Wu , Tianyue Zheng , Yanbing Yang , Jun Luo

Sensor-based Human Activity Recognition (HAR) underpins many ubiquitous and wearable computing applications, yet current models remain limited by scarce labels, sensor heterogeneity, and weak generalization across users, devices, and…

Signal Processing · Electrical Eng. & Systems 2026-04-10 Sizhen Bian , Mengxi Liu , Lala Shakti Swarup Ray , Bo Zhou , Bin Guo , Zhiwen Yu , Thomas Ploetz , Paul Lukowicz , Siyu Yuan , Vitor Fortes Rey

Data augmentation methods inspired by CutMix have demonstrated significant potential in recent semi-supervised medical image segmentation tasks. However, these approaches often apply CutMix operations in a rigid and inflexible manner, while…

Image and Video Processing · Electrical Eng. & Systems 2025-08-07 Yajun Liu , Zenghui Zhang , Jiang Yue , Weiwei Guo , Dongying Li

Previous work has demonstrated that virtual accelerometry data, extracted from videos using cross-modality transfer approaches like IMUTube, is beneficial for training complex and effective human activity recognition (HAR) models. Systems…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Zikang Leng , Yash Jain , Hyeokhyen Kwon , Thomas Plötz

In smart healthcare, Human Activity Recognition (HAR) is considered to be an efficient model in pervasive computation from sensor readings. The Ambient Assisted Living (AAL) in the home or community helps the people in providing independent…

Machine Learning · Computer Science 2021-11-22 Pankaj Khatiwada , Ayan Chatterjee , Matrika Subedi

Human Activity Recognition (HAR) has been a popular research field due to the widespread of devices with sensors and computational power (e.g., smartphones and smartwatches). Applications for HAR systems have been extensively researched in…

Human-Computer Interaction · Computer Science 2023-08-28 Paulo J. S. Ferreira , João Mendes Moreira , João M. P. Cardoso

Human Activity Recognition (HAR) on mobile devices has been demonstrated to be possible using neural models trained on data collected from the device's inertial measurement units. These models have used Convolutional Neural Networks (CNNs),…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Sannara EK , François Portet , Philippe Lalanda

Diffusion magnetic resonance imaging is a noninvasive imaging technique that can indirectly infer the microstructure of tissues and provide metrics which are subject to normal variability across subjects. Potentially abnormal values or…

Image and Video Processing · Electrical Eng. & Systems 2020-08-28 Samuel St-Jean , Max A. Viergever , Alexander Leemans

Various health-care applications such as assisted living, fall detection, etc., require modeling of user behavior through Human Activity Recognition (HAR). Such applications demand characterization of insights from multiple…

Machine Learning · Computer Science 2020-12-07 Gautham Krishna Gudur , Satheesh K. Perepu

Training deep neural networks requires datasets with a large number of annotated examples. The collection and annotation of these datasets is not only extremely expensive but also faces legal and privacy problems. These factors are a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Christoph Reinders , Frederik Schubert , Bodo Rosenhahn

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

Human activity recognition (HAR) research has increased in recent years due to its applications in mobile health monitoring, activity recognition, and patient rehabilitation. The typical approach is training a HAR classifier offline with…

Signal Processing · Electrical Eng. & Systems 2021-02-24 Sizhe An , Ganapati Bhat , Suat Gumussoy , Umit Ogras

Wearables are fundamental to improving our understanding of human activities, especially for an increasing number of healthcare applications from rehabilitation to fine-grained gait analysis. Although our collective know-how to solve Human…

Machine Learning · Computer Science 2020-07-15 Alireza Abedin , Mahsa Ehsanpour , Qinfeng Shi , Hamid Rezatofighi , Damith C. Ranasinghe

Human activity recognition (HAR) in ubiquitous computing is beginning to adopt deep learning to substitute for well-established analysis techniques that rely on hand-crafted feature extraction and classification techniques. From these…

Machine Learning · Computer Science 2016-05-02 Nils Y. Hammerla , Shane Halloran , Thomas Ploetz

Human Activity Recognition (HAR) using Inertial Measurement Unit (IMU) sensors is a cornerstone of mobile health, smart environments, and human-computer interaction. However, current deep learning-based HAR models often struggle with heavy…

Artificial Intelligence · Computer Science 2026-05-07 Naiyu Zheng , Tianlong Yu , Haochen Yin , Xiaoyi Fan , Xiping Hu , Zhimeng Yin

Human-Object Interaction (HOI) detection is a challenging computer vision task that requires visual models to address the complex interactive relationship between humans and objects and predict HOI triplets. Despite the challenges posed by…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Yichao Cao , Qingfei Tang , Feng Yang , Xiu Su , Shan You , Xiaobo Lu , Chang Xu