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Human Activity Recognition (HAR) from devices like smartphone accelerometers is a fundamental problem in ubiquitous computing. Machine learning based recognition models often perform poorly when applied to new users that were not part of…

Machine Learning · Computer Science 2020-12-22 Alan Mazankiewicz , Klemens Böhm , Mario Bergés

The field of Human Activity Recognition (HAR) focuses on obtaining and analysing data captured from monitoring devices (e.g. sensors). There is a wide range of applications within the field; for instance, assisted living, security…

Machine Learning · Computer Science 2020-05-18 Flávia Alves , Martin Gairing , Frans A. Oliehoek , Thanh-Toan Do

Human activity recognition (HAR) with wearables is promising research that can be widely adopted in many smart healthcare applications. In recent years, the deep learning-based HAR models have achieved impressive recognition performance.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Songpengcheng Xia , Lei Chu , Ling Pei , Wenxian Yu , Robert C. Qiu

Recent work on robot manipulation has advanced policy generalization to novel scenarios. However, it is often difficult to characterize how different evaluation settings actually represent generalization from the training distribution of a…

Robotics · Computer Science 2026-03-19 Jensen Gao , Dorsa Sadigh , Sandy Huang , Dhruv Shah

Wearable Human Activity Recognition (WHAR) is a prominent research area within ubiquitous computing. Multi-sensor synchronous measurement has proven to be more effective for WHAR than using a single sensor. However, existing WHAR methods…

Computer Vision and Pattern Recognition · Computer Science 2025-04-28 Haoyu Xie , Haoxuan Li , Chunyuan Zheng , Haonan Yuan , Guorui Liao , Jun Liao , Li Liu

Human Activity Recognition (HAR) plays a critical role in a wide range of real-world applications, and it is traditionally achieved via wearable sensing. Recently, to avoid the burden and discomfort caused by wearable devices, device-free…

Networking and Internet Architecture · Computer Science 2021-10-29 Zhe Chen , Chao Cai , Tianyue Zheng , Jun Luo , Jie Xiong , Xin Wang

Human Activity Recognition (HAR) is a powerful tool for understanding human behaviour. Applying HAR to wearable sensors can provide new insights by enriching the feature set in health studies, and enhance the personalisation and…

Human activity recognition (HAR) through wearable devices has received much interest due to its numerous applications in fitness tracking, wellness screening, and supported living. As a result, we have seen a great deal of work in this…

Machine Learning · Computer Science 2022-06-13 Nafees Ahmad , Savio Ho-Chit Chow , Ho-fung Leung

With the IEEE 802.11bf Task Group introducing amendments to the WLAN standard for advanced sensing, interest in using Wi-Fi Channel State Information (CSI) for remote sensing has surged. Recent findings indicate that learning a unified…

Signal Processing · Electrical Eng. & Systems 2025-09-19 Navid Hasanzadeh , Shahrokh Valaee

This study presents the progress of our recent research regarding wireless measurements of the human body. First, we explain radar imaging algorithms for screening passengers at security checkpoints that can process data faster than…

Signal Processing · Electrical Eng. & Systems 2020-12-04 Takuya Sakamoto

mmWave radars have recently gathered significant attention as a means to track human movement within indoor environments. Widely adopted Kalman filter tracking methods experience performance degradation when the underlying movement is…

Signal Processing · Electrical Eng. & Systems 2022-05-09 Jacopo Pegoraro , Michele Rossi

Measures of Activity of Daily Living (ADL) are an important indicator of overall health but difficult to measure in-clinic. Automated and accurate human activity recognition (HAR) using wrist-worn accelerometers enables practical and cost…

Machine Learning · Computer Science 2021-12-24 Niranjan Sridhar , Lance Myers

Wi-Fi-based human activity recognition (HAR) has emerged as a promising approach for contactless sensing, leveraging channel state information (CSI) collected from wireless transceivers. While existing studies have primarily concentrated on…

Signal Processing · Electrical Eng. & Systems 2026-05-21 Amirhossein Mohammadi , Hina Tabassum

Precise localization and tracking of moving non-collaborative persons and objects using a network of ultra-wideband (UWB) radar nodes has been shown to represent a practical and effective approach. In UWB radar sensor networks (RSNs),…

Signal Processing · Electrical Eng. & Systems 2021-08-03 B. Yan , A. Giorgetti , E. Paolini

Wearable Human Activity Recognition (WHAR) is a prominent research area within ubiquitous computing, whose core lies in effectively modeling intra- and inter-sensor spatio-temporal relationships from multi-modal time series data. Existing…

Human-Computer Interaction · Computer Science 2026-04-13 Wang Chenglong , Zhuo Yan , Ding Wenbo , Chen Xinlei

Human activity recognition~(HAR) has attracted significant research interest due to its applications in health monitoring and patient rehabilitation. Recent research on HAR focuses on using smartphones due to their widespread use. However,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-06 Ganapati Bhat , Ranadeep Deb , Vatika Vardhan Chaurasia , Holly Shill , Umit Y. Ogras

Given the growing trend of continual learning techniques for deep neural networks focusing on the domain of computer vision, there is a need to identify which of these generalizes well to other tasks such as human activity recognition…

Machine Learning · Computer Science 2021-04-21 Saurav Jha , Martin Schiemer , Juan Ye

In practice, Wearable Human Activity Recognition (WHAR) models usually face performance degradation on the new user due to user variance. Unsupervised domain adaptation (UDA) becomes the natural solution to cross-user WHAR under annotation…

Signal Processing · Electrical Eng. & Systems 2023-06-05 Rong Hu , Ling Chen , Shenghuan Miao , Xing Tang

This paper considers human activity classification for an indoor radar system. Human motions generate nonstationary radar returns which represent Doppler and micro-Doppler signals. The time-frequency (TF) analysis of micro-Doppler signals…

Signal Processing · Electrical Eng. & Systems 2021-04-02 Patrick A. Schooley , Syed A. Hamza

Our paper presents a robust framework for UWB-based static gesture recognition, leveraging proprietary UWB radar sensor technology. Extensive data collection efforts were undertaken to compile datasets containing five commonly used…

Computer Vision and Pattern Recognition · Computer Science 2024-04-15 Abhishek Sebastian , Pragna R