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Recent works have shown that powerful pre-trained language models (PLM) can be fooled by small perturbations or intentional attacks. To solve this issue, various data augmentation techniques are proposed to improve the robustness of PLMs.…

Computation and Language · Computer Science 2021-09-14 Kun Zhou , Wayne Xin Zhao , Sirui Wang , Fuzheng Zhang , Wei Wu , Ji-Rong Wen

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

Existing automatic data augmentation (DA) methods either ignore updating DA's parameters according to the target model's state during training or adopt update strategies that are not effective enough. In this work, we design a novel data…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Xiaogang Xu , Hengshuang Zhao

While convolutional neural networks (CNNs) have been successfully applied to many challenging classification applications, they typically require large datasets for training. When the availability of labeled data is limited, data…

Computer Vision and Pattern Recognition · Computer Science 2017-11-10 Terry Taewoong Um , Franz Michael Josef Pfister , Daniel Pichler , Satoshi Endo , Muriel Lang , Sandra Hirche , Urban Fietzek , Dana Kulić

Inertial Measurement Unit (IMU) sensors are present in everyday devices such as smartphones and fitness watches. As a result, the array of health-related research and applications that tap onto this data has been growing, but little…

Machine Learning · Computer Science 2021-08-23 Davi Pedrosa de Aguiar , Fabricio Murai

Data augmentation (DA) techniques aim to increase data variability, and thus train deep networks with better generalisation. The pioneering AutoAugment automated the search for optimal DA policies with reinforcement learning. However,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Yonggang Li , Guosheng Hu , Yongtao Wang , Timothy Hospedales , Neil M. Robertson , Yongxin Yang

The integration of machine learning and deep learning has transformed data analytics in biomechanics, enabled by extensive wearable sensor data. However, the field faces challenges such as limited large-scale datasets and high data…

Machine Learning · Computer Science 2025-08-26 Christina Halmich , Lucas Höschler , Christoph Schranz , Christian Borgelt

Human Activity Recognition (HAR) from wearable sensor data identifies movements or activities in unconstrained environments. HAR is a challenging problem as it presents great variability across subjects. Obtaining large amounts of labelled…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Arttu Lämsä , Jaakko Tervonen , Jussi Liikka , Constantino Álvarez Casado , Miguel Bordallo López

Span identification aims at identifying specific text spans from text input and classifying them into pre-defined categories. Different from previous works that merely leverage the Subordinate (SUB) relation (i.e. if a span is an instance…

Computation and Language · Computer Science 2023-05-19 Weiwen Xu , Xin Li , Yang Deng , Wai Lam , Lidong Bing

In this study, the aim is to personalize inertial sensor data-based human activity recognition models using incremental learning. At first, the recognition is based on user-independent model. However, when personal streaming data becomes…

Machine Learning · Computer Science 2019-05-31 Pekka Siirtola , Heli Koskimäki , Juha Röning

Physical activity during hip fracture rehabilitation is essential for mitigating long-term functional decline in geriatric patients. However, it is rarely quantified in clinical practice. Existing continuous monitoring systems with…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Shuhao Que , Dieuwke van Dartel , Ilse Heeringa , Han Hegeman , Miriam Vollenbroek-Hutten , Ying Wang

As an effective strategy, data augmentation (DA) alleviates data scarcity scenarios where deep learning techniques may fail. It is widely applied in computer vision then introduced to natural language processing and achieves improvements in…

Computation and Language · Computer Science 2022-06-28 Bohan Li , Yutai Hou , Wanxiang Che

While deep learning has contributed to the advancement of sensor-based Human Activity Recognition (HAR), it is usually a costly and challenging supervised task with the needs of a large amount of labeled data. To alleviate this issue,…

Human-Computer Interaction · Computer Science 2022-03-24 Jinqiang Wang , Tao Zhu , Jingyuan Gan , Liming Chen , Huansheng Ning , Yaping Wan

The primary objective of human activity recognition (HAR) is to infer ongoing human actions from sensor data, a task that finds broad applications in health monitoring, safety protection, and sports analysis. Despite proliferating research,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-14 Hang Xiao , Ying Yu , Jiarui Li , Zhifan Yang , Haotian Tang , Hanyu Liu , Chao Li

There are several confounding factors that can reduce the accuracy of gait recognition systems. These factors can reduce the distinctiveness, or alter the features used to characterise gait, they include variations in clothing, lighting,…

Computer Vision and Pattern Recognition · Computer Science 2016-10-25 Christoforos C. Charalambous , Anil A. Bharath

Many deep architectures and self-supervised pre-training techniques have been proposed for human activity recognition (HAR) from wearable multimodal sensors. Scaling laws have the potential to help move towards more principled design by…

Machine Learning · Computer Science 2025-05-22 Tom Hoddes , Alex Bijamov , Saket Joshi , Daniel Roggen , Ali Etemad , Robert Harle , David Racz

Despite the rapid growth in datasets for video activity, stable robust activity recognition with neural networks remains challenging. This is in large part due to the explosion of possible variation in video -- including lighting changes,…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Yi Zhang , Xinyue Wei , Weichao Qiu , Zihao Xiao , Gregory D. Hager , Alan Yuille

Human activity recognition (HAR) by wearable sensor devices embedded in the Internet of things (IOT) can play a significant role in remote health monitoring and emergency notification, to provide healthcare of higher standards. The purpose…

Machine Learning · Computer Science 2022-01-24 M. Abid , A. Khabou , Y. Ouakrim , H. Watel , S. Chemkhi , A. Mitiche , A. Benazza-Benyahia , N. Mezghani

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

Sensor-based human activity recognition (HAR) is now a research hotspot in multiple application areas. With the rise of smart wearable devices equipped with inertial measurement units (IMUs), researchers begin to utilize IMU data for HAR.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-09 Fanyi Xiao , Ling Pei , Lei Chu , Danping Zou , Wenxian Yu , Yifan Zhu , Tao Li