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In this paper, we propose a self-supervised learning solution for human activity recognition with smartphone accelerometer data. We aim to develop a model that learns strong representations from accelerometer signals, in order to perform…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Setareh Rahimi Taghanaki , Michael Rainbow , Ali Etemad

Deep learning methods are successfully used in applications pertaining to ubiquitous computing, health, and well-being. Specifically, the area of human activity recognition (HAR) is primarily transformed by the convolutional and recurrent…

Machine Learning · Computer Science 2019-07-30 Aaqib Saeed , Tanir Ozcelebi , Johan Lukkien

Wearable devices such as smartwatches are becoming increasingly popular tools for objectively monitoring physical activity in free-living conditions. To date, research has primarily focused on the purely supervised task of human activity…

Signal Processing · Electrical Eng. & Systems 2021-05-26 Dimitris Spathis , Ignacio Perez-Pozuelo , Soren Brage , Nicholas J. Wareham , Cecilia Mascolo

While the widely available embedded sensors in smartphones and other wearable devices make it easier to obtain data of human activities, recognizing different types of human activities from sensor-based data remains a difficult research…

Signal Processing · Electrical Eng. & Systems 2024-08-15 Taoran Sheng , Manfred Huber

We introduce statistical methods for predicting the types of human activity at sub-second resolution using triaxial accelerometry data. The major innovation is that we use labeled activity data from some subjects to predict the activity…

The embedded sensors in widely used smartphones and other wearable devices make the data of human activities more accessible. However, recognizing different human activities from the wearable sensor data remains a challenging research…

Machine Learning · Computer Science 2023-07-25 Taoran Sheng , Manfred Huber

Automatic recognition of human activities from time-series sensor data (referred to as HAR) is a growing area of research in ubiquitous computing. Most recent research in the field adopts supervised deep learning paradigms to automate…

Machine Learning · Computer Science 2018-11-21 Alireza Abedin Varamin , Ehsan Abbasnejad , Qinfeng Shi , Damith Ranasinghe , Hamid Rezatofighi

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

We propose a novel system for unsupervised skeleton-based action recognition. Given inputs of body keypoints sequences obtained during various movements, our system associates the sequences with actions. Our system is based on an…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Kun Su , Xiulong Liu , Eli Shlizerman

Machine learning and deep learning have shown great promise in mobile sensing applications, including Human Activity Recognition. However, the performance of such models in real-world settings largely depends on the availability of large…

Machine Learning · Computer Science 2021-02-12 Chi Ian Tang , Ignacio Perez-Pozuelo , Dimitris Spathis , Soren Brage , Nick Wareham , Cecilia Mascolo

Human activity recognition has wide applications in medical research and human survey system. In this project, we design a robust activity recognition system based on a smartphone. The system uses a 3-dimentional smartphone accelerometer as…

Computers and Society · Computer Science 2014-02-03 Amin Rasekh , Chien-An Chen , Yan Lu

A major barrier to the personalized Human Activity Recognition using wearable sensors is that the performance of the recognition model drops significantly upon adoption of the system by new users or changes in physical/ behavioral status of…

Computer Vision and Pattern Recognition · Computer Science 2018-01-26 Seyed Ali Rokni , Marjan Nourollahi , Hassan Ghasemzadeh

Wearable sensor devices, which offer the advantage of recording daily objects used by a person while performing an activity, enable the feasibility of unsupervised Human Activity Recognition (HAR). Unfortunately, previous unsupervised…

Human-Computer Interaction · Computer Science 2023-06-12 Qingxin Xia , Takuya Maekawa , Takahiro Hara

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

To date, research on sensor-equipped mobile devices has primarily focused on the purely supervised task of human activity recognition (walking, running, etc), demonstrating limited success in inferring high-level health outcomes from…

Machine Learning · Computer Science 2020-11-10 Dimitris Spathis , Ignacio Perez-Pozuelo , Soren Brage , Nicholas J. Wareham , Cecilia Mascolo

Automated and accurate human activity recognition (HAR) using body-worn sensors enables practical and cost efficient remote monitoring of Activity of DailyLiving (ADL), which are shown to provide clinical insights across multiple…

Signal Processing · Electrical Eng. & Systems 2023-05-01 Maximilien Burq , Niranjan Sridhar

The problem of human activity recognition is central for understanding and predicting the human behavior, in particular in a prospective of assistive services to humans, such as health monitoring, well being, security, etc. There is…

Machine Learning · Statistics 2013-12-30 Faicel Chamroukhi , Samer Mohammed , Dorra Trabelsi , Latifa Oukhellou , Yacine Amirat

There is a research field of human activity recognition that automatically recognizes a user's physical activity through sensing technology incorporated in smartphones and other devices. When sensing daily activity, various measurement…

Human-Computer Interaction · Computer Science 2021-01-05 Tatsuhito Hasegawa

Wearable accelerometers enable large-scale health monitoring, yet learning robust human-activity representations has been constrained by scarce labeled data. While self-supervised learning offers a remedy, existing methods treat sensor…

Machine Learning · Computer Science 2026-05-28 Prithviraj Tarale , Kiet Chu , Abhishek Varghese , Kai-Chun Liu , Maxwell A. Xu , Mohit Iyyer , Sunghoon I. Lee

A person's movement or relative positioning can be effectively captured by different types of sensors and corresponding sensor output can be utilized in various manipulative techniques for the classification of different human activities.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Utsab Saha , Sawradip Saha , Tahmid Kabir , Shaikh Anowarul Fattah , Mohammad Saquib
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