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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

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

Human Activity Recognition has gained significant attention due to its diverse applications, including ambient assisted living and remote sensing. Wearable sensor-based solutions often suffer from user discomfort and reliability issues,…

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

The widespread utilization of smartphones has provided extensive availability to Inertial Measurement Units, providing a wide range of sensory data that can be advantageous for the detection of transportation modes. The objective of this…

Machine Learning · Computer Science 2023-10-18 Qinrui Tang , Hao Cheng

Transportation mode recognition (TMR) is a critical component of human activity recognition (HAR) that focuses on understanding and identifying how people move within transportation systems. It is commonly based on leveraging inertial,…

Signal Processing · Electrical Eng. & Systems 2024-04-26 Christos Siargkas , Vasileios Papapanagiotou , Anastasios Delopoulos

We propose the use of self-supervised learning for human activity recognition with smartphone accelerometer data. Our proposed solution consists of two steps. First, the representations of unlabeled input signals are learned by training a…

Signal Processing · Electrical Eng. & Systems 2021-09-03 Setareh Rahimi Taghanaki , Michael Rainbow , Ali Etemad

Much of the energy consumption in buildings is due to HVAC systems, which has motivated several recent studies on making these systems more energy- efficient. Occupancy and activity are two important aspects, which need to be correctly…

Machine Learning · Computer Science 2014-09-09 Rajib Rana , Brano Kusy , Josh Wall , Wen Hu

Indoor self-localization is a highly demanded system function for smartphones. The current solutions based on inertial, radio frequency, and geomagnetic sensing may have degraded performance when their limiting factors take effect. In this…

Robotics · Computer Science 2022-10-18 Wenjie Luo , Qun Song , Zhenyu Yan , Rui Tan , Guosheng Lin

Human activity recognition has gained importance in recent years due to its applications in various fields such as health, security and surveillance, entertainment, and intelligent environments. A significant amount of work has been done on…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Zawar Hussain , Michael Sheng , Wei Emma Zhang

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

Real-world traffic involves diverse road users, ranging from pedestrians to heavy trucks, necessitating effective road user classification for various applications within Intelligent Transport Systems (ITS). Traditional approaches often…

Machine Learning · Computer Science 2024-12-03 Lennart Köpper , Thomas Wieland

This paper explores the promising interplay between spiking neural networks (SNNs) and event-based cameras for privacy-preserving human action recognition (HAR). The unique feature of event cameras in capturing only the outlines of motion,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Siyuan Yang , Shilin Lu , Shizheng Wang , Meng Hwa Er , Zengwei Zheng , Alex C. Kot

We introduce a system that recognizes concurrent activities from real-world data captured by multiple sensors of different types. The recognition is achieved in two steps. First, we extract spatial and temporal features from the multimodal…

Computer Vision and Pattern Recognition · Computer Science 2017-02-07 Xinyu Li , Yanyi Zhang , Jianyu Zhang , Shuhong Chen , Ivan Marsic , Richard A. Farneth , Randall S. Burd

Human activity recognition serves an important part in building continuous behavioral monitoring systems, which are deployable for visual surveillance, patient rehabilitation, gaming, and even personally inclined smart homes. This paper…

Computer Vision and Pattern Recognition · Computer Science 2020-06-02 Olasimbo Ayodeji Arigbabu

Since Convolutional Neural Networks (ConvNets) are able to simultaneously learn features and classifiers to discriminate different categories of activities, recent works have employed ConvNets approaches to perform human activity…

Computer Vision and Pattern Recognition · Computer Science 2018-11-19 Artur Jordao , Ricardo Kloss , William Robson Schwartz

As part of daily monitoring of human activities, wearable sensors and devices are becoming increasingly popular sources of data. With the advent of smartphones equipped with acceloremeter, gyroscope and camera; it is now possible to develop…

Machine Learning · Computer Science 2015-10-20 Mehmet Emin Basbug , Koray Ozcan , Senem Velipasalar

Human Activity Recognition (HAR) has been a popular research field due to the widespread of devices with sensors and computational power (e.g., smartphones and smartwatches). Applications for HAR systems have been extensively researched in…

Human-Computer Interaction · Computer Science 2023-08-28 Paulo J. S. Ferreira , João Mendes Moreira , João M. P. Cardoso

This article introduces the architecture of a Long-Short-Term Memory network for classifying transportation-modes via Smartphone data and evaluates its accuracy. By using a Long-Short-Term-Memory Network with common preprocessing steps such…

Machine Learning · Computer Science 2019-10-11 Björn Friedrich , Benjamin Cauchy , Andreas Hein , Sebastian Fudickar

In this work we present a novel internal clock based space-time neural network for motion speed recognition. The developed system has a spike train encoder, a Spiking Neural Network (SNN) with internal clocking behaviors, a pattern…

Computer Vision and Pattern Recognition · Computer Science 2020-01-29 Junwen Luo , Jiaoyan Chen