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Protective behavior exhibited by people with chronic pain (CP) during physical activities is the key to understanding their physical and emotional states. Existing automatic protective behavior detection (PBD) methods rely on…

Machine Learning · Computer Science 2021-02-03 Chongyang Wang , Yuan Gao , Akhil Mathur , Amanda C. De C. Williams , Nicholas D. Lane , Nadia Bianchi-Berthouze

Human Activity Recognition (HAR) is one of the key applications of health monitoring that requires continuous use of wearable devices to track daily activities. This paper proposes an Adaptive CNN for energy-efficient HAR (AHAR) suitable…

Machine Learning · Computer Science 2022-01-04 Nafiul Rashid , Berken Utku Demirel , Mohammad Abdullah Al Faruque

Exploiting robots for activities in human-shared environments, whether warehouses, shopping centres or hospitals, calls for such robots to understand the underlying physical interactions between nearby agents and objects. In particular,…

Robotics · Computer Science 2023-02-21 Luca Castri , Sariah Mghames , Marc Hanheide , Nicola Bellotto

Despite recognized limitations in modeling long-range temporal dependencies, Human Activity Recognition (HAR) has traditionally relied on a sliding window approach to segment labeled datasets. Deep learning models like the DeepConvLSTM…

Machine Learning · Computer Science 2025-05-28 Marius Bock , Michael Moeller , Kristof Van Laerhoven

Background: Smartphones are now nearly ubiquitous; their numerous built-in sensors enable continuous measurement of activities of daily living, making them especially well-suited for health research. Researchers have proposed various human…

Human-Computer Interaction · Computer Science 2021-03-29 Marcin Straczkiewicz , Peter James , Jukka-Pekka Onnela

To fluently collaborate with people, robots need the ability to recognize human activities accurately. Although modern robots are equipped with various sensors, robust human activity recognition (HAR) still remains a challenging task for…

Robotics · Computer Science 2020-08-17 Md Mofijul Islam , Tariq Iqbal

Supervised Deep Learning (DL) models are currently the leading approach for sensor-based Human Activity Recognition (HAR) on wearable and mobile devices. However, training them requires large amounts of labeled data whose collection is…

Machine Learning · Computer Science 2023-04-20 Luca Arrotta , Gabriele Civitarese , Samuele Valente , Claudio Bettini

We present a unified framework for understanding human social behaviors in raw image sequences. Our model jointly detects multiple individuals, infers their social actions, and estimates the collective actions with a single feed-forward…

Computer Vision and Pattern Recognition · Computer Science 2016-11-29 Timur Bagautdinov , Alexandre Alahi , François Fleuret , Pascal Fua , Silvio Savarese

The key of sequential recommendation lies in the accurate item correlation modeling. Previous models infer such information based on item co-occurrences, which may fail to capture the real causal relations, and impact the recommendation…

Information Retrieval · Computer Science 2022-12-14 Zhenlei Wang , Xu Chen , Rui Zhou , Quanyu Dai , Zhenhua Dong , Ji-Rong Wen

Human activity recognition (HAR) has been playing an increasingly important role in various domains such as healthcare, security monitoring, and metaverse gaming. Though numerous HAR methods based on computer vision have been developed to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Jianfei Yang , Shijie Tang , Yuecong Xu , Yunjiao Zhou , Lihua Xie

We propose a sparse-coding framework for activity recognition in ubiquitous and mobile computing that alleviates two fundamental problems of current supervised learning approaches. (i) It automatically derives a compact, sparse and…

Machine Learning · Computer Science 2014-07-24 Sourav Bhattacharya , Petteri Nurmi , Nils Hammerla , Thomas Plötz

Activity detection is an important task in the next generation grant-free multiple access. While there are a number of existing algorithms designed for this purpose, they mostly require precise information about the network, such as…

Machine Learning · Computer Science 2024-02-05 Hao Zhang , Qingfeng Lin , Yang Li , Lei Cheng , Yik-Chung Wu

Human activity recognition (HAR) in wearable computing is typically based on direct processing of sensor data. Sensor readings are translated into representations, either derived through dedicated preprocessing, or integrated into…

Machine Learning · Computer Science 2023-06-05 Harish Haresamudram , Irfan Essa , Thomas Ploetz

Causality is crucial to understanding the mechanisms behind complex systems and making decisions that lead to intended outcomes. Event sequence data is widely collected from many real-world processes, such as electronic health records, web…

Artificial Intelligence · Computer Science 2020-11-20 Zhuochen Jin , Shunan Guo , Nan Chen , Daniel Weiskopf , David Gotz , Nan Cao

While computers play an increasingly important role in every aspect of our lives, their inability to understand what tasks users are physically performing makes a wide range of applications, including health monitoring and context-specific…

Human-Computer Interaction · Computer Science 2021-08-17 Arvind Seshan

In this article we present SHARP, an original approach for obtaining human activity recognition (HAR) through the use of commercial IEEE 802.11 (Wi-Fi) devices. SHARP grants the possibility to discern the activities of different persons,…

Signal Processing · Electrical Eng. & Systems 2022-11-08 Francesca Meneghello , Domenico Garlisi , Nicolò Dal Fabbro , Ilenia Tinnirello , Michele Rossi

Causal discovery is challenging in general dynamical systems because, without strong structural assumptions, the underlying causal graph may not be identifiable even from interventional data. However, many real-world systems exhibit…

Machine Learning · Computer Science 2026-04-07 Panayiotis Panayiotou , Özgür Şimşek

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

Understanding human activity is a crucial aspect of developing intelligent robots, particularly in the domain of human-robot collaboration. Nevertheless, existing systems encounter challenges such as over-segmentation, attributed to errors…

Robotics · Computer Science 2024-10-11 Hao Xing , Darius Burschka

Indoor human activity recognition (HAR) explores the correlation between human body movements and the reflected WiFi signals to classify different activities. By analyzing WiFi signal patterns, especially the dynamics of channel state…

Signal Processing · Electrical Eng. & Systems 2020-04-24 Parisa Fard Moshiri , Hojjat Navidan , Reza Shahbazian , Seyed Ali Ghorashi , David Windridge