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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

Wi-Fi sensing is a leading technology for Human Activity Recognition (HAR), offering a non-intrusive and cost-effective solution for healthcare and smart environments. Despite its potential, existing methods struggle with domain shift…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Alison M. Fernandes , Hermes I. Del Monego , Bruno S. Chang , Anelise Munaretto , Hélder M. Fontes , Rui L. Campos

Existing multiple modality fusion methods, such as concatenation, summation, and encoder-decoder-based fusion, have recently been employed to combine modality characteristics of Hyperspectral Image (HSI) and Light Detection And Ranging…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Lu Huo , Jiahao Xia , Leijie Zhang , Haimin Zhang , Min Xu

Human Activity Recognition (HAR) has recently witnessed advancements with Transformer-based models. Especially, ActionFormer shows us a new perspectives for HAR in the sense that this approach gives us additional outputs which detect the…

Machine Learning · Computer Science 2025-05-28 Kunpeng Zhao , Asahi Miyazaki , Tsuyoshi Okita

Human Activity Recognition (HAR) on resource-constrained wearable devices demands inference models that harmonize accuracy with computational efficiency. This paper introduces TinierHAR, an ultra-lightweight deep learning architecture that…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Sizhen Bian , Mengxi Liu , Vitor Fortes Rey , Daniel Geissler , Paul Lukowicz

Radars, due to their robustness to adverse weather conditions and ability to measure object motions, have served in autonomous driving and intelligent agents for years. However, Radar-based perception suffers from its unintuitive sensing…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Liu Liu , Shuaifeng Zhi , Zhenhua Du , Li Liu , Xinyu Zhang , Kai Huo , Weidong Jiang

Context-aware Human Activity Recognition (CHAR) is challenging due to the need to recognize the user's current activity from signals that vary significantly with contextual factors such as phone placements and the varied styles with which…

Machine Learning · Computer Science 2024-09-27 Wen Ge , Guanyi Mou , Emmanuel O. Agu , Kyumin Lee

Human Activity Recognition (HAR) based on wearable inertial sensors plays a critical role in remote health monitoring. In patients with movement disorders, the ability to detect abnormal patient movements in their home environments can…

Transformers have excelled in natural language processing and computer vision, paving their way to sensor-based Human Activity Recognition (HAR). Previous studies show that transformers outperform their counterparts exclusively when they…

Machine Learning · Computer Science 2024-10-18 Clayton Souza Leite , Henry Mauranen , Aziza Zhanabatyrova , Yu Xiao

Incorporating item-side information, such as category and brand, into sequential recommendation is a well-established and effective approach for improving performance. However, despite significant advancements, current models are generally…

Information Retrieval · Computer Science 2026-01-01 Jie Luo , Wenyu Zhang , Xinming Zhang , Yuan Fang

Human Activity Recognition (HAR) primarily relied on traditional RGB cameras to achieve high-performance activity recognition. However, the challenging factors in real-world scenarios, such as insufficient lighting and rapid movements,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Shiao Wang , Xiao Wang , Bo Jiang , Lin Zhu , Guoqi Li , Yaowei Wang , Yonghong Tian , Jin Tang

Human Activity Recognition (HAR) stands as a pivotal technique within pattern recognition, dedicated to deciphering human movements and actions utilizing one or multiple sensory inputs. Its significance extends across diverse applications,…

Human-Computer Interaction · Computer Science 2024-06-18 Farhad Nazari , Arian Shajari , Darius Nahavandi , Navid Mohajer

The person search task aims to locate a target person within a set of scene images. In recent years, transformer-based models in this field have made some progress. However, they still face three primary challenges: 1) the self-attention…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Qilin Shu , Qixian Zhang , Qi Zhang , Hongyun Zhang , Duoqian Miao , Cairong Zhao

Human activity recognition, facilitated by smart devices, has recently garnered significant attention. Deep learning algorithms have become pivotal in daily activities, sports, and healthcare. Nevertheless, addressing the challenge of…

Human-Computer Interaction · Computer Science 2024-11-19 Nazanin Sedaghati , Masoud Kargar , Sina Abbaskhani

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

Recent advancements in sensor technology and deep learning have led to significant progress in 3D human body reconstruction. However, most existing approaches rely on data from a specific sensor, which can be unreliable due to the inherent…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Anjun Chen , Xiangyu Wang , Zhi Xu , Kun Shi , Yan Qin , Yuchi Huo , Jiming Chen , Qi Ye

The development of robust, generalized models in human activity recognition (HAR) has been hindered by the scarcity of large-scale, labeled data sets. Recent work has shown that virtual IMU data extracted from videos using computer vision…

Computer Vision and Pattern Recognition · Computer Science 2023-05-08 Zikang Leng , Hyeokhyen Kwon , Thomas Plötz

Human activity recognition (HAR) ideally relies on data from wearable or environment-instrumented sensors sampled at regular intervals, enabling standard neural network models optimized for consistent time-series data as input. However,…

Signal Processing · Electrical Eng. & Systems 2025-01-28 Mengxi Liu , Daniel Geißler , Sizhen Bian , Bo Zhou , Paul Lukowicz

Multispectral object detection aims to leverage complementary information from visible (RGB) and infrared (IR) modalities to enable robust performance under diverse environmental conditions. Our key insight, derived from wavelet analysis…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Seongmin Hwang , Daeyoung Han , Moongu Jeon

Object detection is an essential task for autonomous robots operating in dynamic and changing environments. A robot should be able to detect objects in the presence of sensor noise that can be induced by changing lighting conditions for…

Robotics · Computer Science 2019-11-20 Oier Mees , Andreas Eitel , Wolfram Burgard