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Machine learning-based wearable human activity recognition (WHAR) models enable the development of various smart and connected community applications such as sleep pattern monitoring, medication reminders, cognitive health assessment,…

Signal Processing · Electrical Eng. & Systems 2023-04-14 Avijoy Chakma , Abu Zaher Md Faridee , Indrajeet Ghosh , Nirmalya Roy

Human activity recognition (HAR) using wearable sensors has advanced through various machine learning paradigms, each with inherent trade-offs between performance and labeling requirements. While fully supervised techniques achieve high…

Machine Learning · Computer Science 2025-12-24 Taoran Sheng , Manfred Huber

Wi-Fi-based human activity recognition (HAR) provides substantial convenience and has emerged as a thriving research field, yet the coarse spatial resolution inherent to Wi-Fi significantly hinders its ability to distinguish multiple…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Xin Li , Jingzhi Hu , Yinghui He , Hongbo Wang , Jin Gan , Jun Luo

Activity recognition using built-in sensors in smart and wearable devices provides great opportunities to understand and detect human behavior in the wild and gives a more holistic view of individuals' health and well being. Numerous…

Signal Processing · Electrical Eng. & Systems 2020-11-16 Mehrdad Fazli , Kamran Kowsari , Erfaneh Gharavi , Laura Barnes , Afsaneh Doryab

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

Deep neural networks based purely on attention have been successful across several domains, relying on minimal architectural priors from the designer. In Human Action Recognition (HAR), attention mechanisms have been primarily adopted on…

Computer Vision and Pattern Recognition · Computer Science 2022-01-11 Vittorio Mazzia , Simone Angarano , Francesco Salvetti , Federico Angelini , Marcello Chiaberge

Human Activity Recognition (HAR) is a challenging problem that needs advanced solutions than using handcrafted features to achieve a desirable performance. Deep learning has been proposed as a solution to obtain more accurate HAR systems…

Machine Learning · Computer Science 2020-07-08 Hamed Damirchi , Rooholla Khorrambakht , Hamid Taghirad

As a critical component of Wearable AI, IMU-based Human Activity Recognition (HAR) has attracted increasing attention from both academia and industry in recent years. Although HAR performance has improved considerably in specific scenarios,…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Yize Cai , Baoshen Guo , Flora Salim , Zhiqing Hong

With the popularity and development of the wearable devices such as smartphones, human activity recognition (HAR) based on sensors has become as a key research area in human computer interaction and ubiquitous computing. The emergence of…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Kun Wang , Jun He , Lei Zhang

Human activity recognition (HAR) is a rapidly growing field that utilizes smart devices, sensors, and algorithms to automatically classify and identify the actions of individuals within a given environment. These systems have a wide range…

The combination of increased life expectancy and falling birth rates is resulting in an aging population. Wearable Sensor-based Human Activity Recognition (WSHAR) emerges as a promising assistive technology to support the daily lives of…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Jianyuan Ni , Hao Tang , Syed Tousiful Haque , Yan Yan , Anne H. H. Ngu

This paper attempts at improving the accuracy of Human Action Recognition (HAR) by fusion of depth and inertial sensor data. Firstly, we transform the depth data into Sequential Front view Images(SFI) and fine-tune the pre-trained AlexNet…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Zeeshan Ahmad , Naimul Khan

Human activity recognition (HAR) is a long-standing problem in artificial intelligence with applications in a broad range of areas, including healthcare, sports and fitness, security, and more. The performance of HAR in real-world settings…

The thesis explores novel methods for Human Activity Recognition (HAR) using passive radar with a focus on non-intrusive Wi-Fi Channel State Information (CSI) data. Traditional HAR approaches often use invasive sensors like cameras or…

Machine Learning · Computer Science 2024-11-01 Christian Bresciani , Federico Cerutti , Marco Cominelli

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

Wearable sensor based human activity recognition is a challenging problem due to difficulty in modeling spatial and temporal dependencies of sensor signals. Recognition models in closed-set assumption are forced to yield members of known…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 M Tanjid Hasan Tonmoy , Saif Mahmud , A K M Mahbubur Rahman , M Ashraful Amin , Amin Ahsan Ali

This paper presents a novel multimodal human activity recognition system. It uses a two-stream decision level fusion of vision and inertial sensors. In the first stream, raw RGB frames are passed to a part affinity field-based pose…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Santosh Kumar Yadav , Muhtashim Rafiqi , Egna Praneeth Gummana , Kamlesh Tiwari , Hari Mohan Pandey , Shaik Ali Akbara

The development of IoT technology enables a variety of sensors can be integrated into mobile devices. Human Activity Recognition (HAR) based on sensor data has become an active research topic in the field of machine learning and ubiquitous…

Machine Learning · Computer Science 2022-08-10 Yifan Hu , Yu Wang

Detecting human actions is a crucial task for autonomous robots and vehicles, often requiring the integration of various data modalities for improved accuracy. In this study, we introduce a novel approach to Human Action Recognition (HAR)…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Mohammad Mahdavian , Mohammad Loni , Ted Samuelsson , Mo Chen

Human Action Recognition (HAR), one of the most important tasks in computer vision, has developed rapidly in the past decade and has a wide range of applications in health monitoring, intelligent surveillance, virtual reality, human…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Zhou Shuchang