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Developing high-performing systems for detecting biomedical named entities has major implications. State-of-the-art deep-learning based solutions for entity recognition often require large annotated datasets, which is not available in the…

Computation and Language · Computer Science 2020-11-03 Arda Akdemir , Tetsuo Shibuya

Temporal convolutions have been the paradigm of choice in action segmentation, which enhances long-term receptive fields by increasing convolution layers. However, high layers cause the loss of local information necessary for frame…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Jiahui Wang , Zhenyou Wang , Shanna Zhuang , Hui Wang

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

This paper presents an unsupervised transformer-based framework for temporal activity segmentation which leverages not only frame-level cues but also segment-level cues. This is in contrast with previous methods which often rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Quoc-Huy Tran , Ahmed Mehmood , Muhammad Ahmed , Muhammad Naufil , Anas Zafar , Andrey Konin , M. Zeeshan Zia

Learning from demonstrations (LfD) is an efficient paradigm to train AI agents. But major issues arise when there are differences between (a) the demonstrator's own sensory input, (b) our sensors that observe the demonstrator and (c) the…

Artificial Intelligence · Computer Science 2020-03-03 Jalal Etesami , Philipp Geiger

Human Activity Recognition (HAR) with wearable sensors is challenged by limited interpretability, which significantly impacts cross-dataset generalization. To address this challenge, we propose Motion-Primitive Transformer (MoPFormer), a…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Hao Zhang , Zhan Zhuang , Xuehao Wang , Xiaodong Yang , Yu Zhang

Providing care for ageing populations is an onerous task, and as life expectancy estimates continue to rise, the number of people that require senior care is growing rapidly. This paper proposes a methodology based on Transformer Neural…

Signal Processing · Electrical Eng. & Systems 2020-11-25 Luke Hicks , Ariel Ruiz-Garcia , Vasile Palade , Ibrahim Almakky

Hyperspectral image (HSI) classification presents inherent challenges due to high spectral dimensionality, significant domain shifts, and limited availability of labeled data. To address these issues, we propose a novel Active Transfer…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Muhammad Ahmad , Francesco Mauro , Manuel Mazzara , Salvatore Distefano , Adil Mehmood Khan , Silvia Liberata Ullo

Transfer learning aims to faciliate learning tasks in a label-scarce target domain by leveraging knowledge from a related source domain with plenty of labeled data. Often times we may have multiple domains with little or no labeled data as…

Machine Learning · Computer Science 2017-11-10 Tianchun Wang

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

Several techniques have been proposed to address the problem of recognizing activities of daily living from signals. Deep learning techniques applied to inertial signals have proven to be effective, achieving significant classification…

Signal Processing · Electrical Eng. & Systems 2022-01-21 Hamza Amrani , Daniela Micucci , Marco Mobilio , Paolo Napoletano

We introduce SensorLLM, a two-stage framework that enables Large Language Models (LLMs) to perform human activity recognition (HAR) from sensor time-series data. Despite their strong reasoning and generalization capabilities, LLMs remain…

Computation and Language · Computer Science 2025-08-26 Zechen Li , Shohreh Deldari , Linyao Chen , Hao Xue , Flora D. Salim

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

The problem of automatic identification of physical activities performed by human subjects is referred to as Human Activity Recognition (HAR). There exist several techniques to measure motion characteristics during these physical…

Machine Learning · Computer Science 2019-06-06 Antonio Bevilacqua , Kyle MacDonald , Aamina Rangarej , Venessa Widjaya , Brian Caulfield , Tahar Kechadi

Batteryless or so called passive wearables are providing new and innovative methods for human activity recognition (HAR), especially in healthcare applications for older people. Passive sensors are low cost, lightweight, unobtrusive and…

Machine Learning · Computer Science 2019-06-07 Alireza Abedin , S. Hamid Rezatofighi , Qinfeng Shi , Damith C. Ranasinghe

Reliable perception during fast motion maneuvers or in high dynamic range environments is crucial for robotic systems. Since event cameras are robust to these challenging conditions, they have great potential to increase the reliability of…

Computer Vision and Pattern Recognition · Computer Science 2022-02-04 Nico Messikommer , Daniel Gehrig , Mathias Gehrig , Davide Scaramuzza

Transfer learning seeks to improve the generalization performance of a target task by exploiting the knowledge learned from a related source task. Central questions include deciding what information one should transfer and when transfer can…

Machine Learning · Computer Science 2021-04-07 Oussama Dhifallah , Yue M. Lu

High-dimensional data in modern applications, such as COVID-19 mortality, often span multiple domains. Leveraging auxiliary information from source domains to improve performance in a target domain motivates the use of transfer learning.…

Methodology · Statistics 2026-04-09 Haoming Shi , Yang Feng , Xiaoqian Liu

Elder people consequence a variety of problems while living Activities of Daily Living (ADL) for the reason of age, sense, loneliness and cognitive changes. These cause the risk to ADL which leads to several falls. Getting real life fall…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Asma Khatun , Sk. Golam Sarowar Hossain

Smartphone sensors based human activity recognition is attracting increasing interests nowadays with the popularization of smartphones. With the high sampling rates of smartphone sensors, it is a highly long-range temporal recognition…

Computer Vision and Pattern Recognition · Computer Science 2020-11-09 Beidi Zhao , Shuai Li , Yanbo Gao , Chuankun Li , Wanqing Li