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Skeleton-based human action recognition is a powerful approach for understanding human behaviour from pose data, but collecting large-scale, diverse, and well-annotated 3D skeleton datasets is both expensive and labor-intensive. To address…

计算机视觉与模式识别 · 计算机科学 2026-04-17 Xu Dong , Wanqing Li , Anthony Adeyemi-Ejeye , Andrew Gilbert

Data augmentation is widely used for machine learning; however, an effective method to apply data augmentation has not been established even though it includes several factors that should be tuned carefully. One such factor is sample…

机器学习 · 计算机科学 2020-10-30 Tomoumi Takase , Ryo Karakida , Hideki Asoh

Indoor localization is a challenging problem that - unlike outdoor localization - lacks a universal and robust solution. Machine Learning (ML), particularly Deep Learning (DL), methods have been investigated as a promising approach.…

系统与控制 · 电气工程与系统科学 2024-08-29 Omer Gokalp Serbetci , Daoud Burghal , Andreas F. Molisch

Combining different sensing modalities with multiple positions helps form a unified perception and understanding of complex situations such as human behavior. Hence, human activity recognition (HAR) benefits from combining redundant and…

机器学习 · 计算机科学 2024-04-26 Hymalai Bello

Deep neural networks are parametrized by several thousands or millions of parameters, and have shown tremendous success in many classification problems. However, the large number of parameters makes it difficult to integrate these models…

机器学习 · 计算机科学 2022-01-04 Eun Som Jeon , Anirudh Som , Ankita Shukla , Kristina Hasanaj , Matthew P. Buman , Pavan Turaga

Data augmentation (DA) is commonly used during model training, as it significantly improves test error and model robustness. DA artificially expands the training set by applying random noise, rotations, crops, or even adversarial…

机器学习 · 计算机科学 2019-05-09 Shashank Rajput , Zhili Feng , Zachary Charles , Po-Ling Loh , Dimitris Papailiopoulos

In the realm of smart sensing with the Internet of Things, earable devices are empowered with the capability of multi-modality sensing and intelligence of context-aware computing, leading to its wide usage in Human Activity Recognition…

信号处理 · 电气工程与系统科学 2024-06-26 Shengzhe Lyu , Yongliang Chen , Di Duan , Renqi Jia , Weitao Xu

Human Activity Recognition (HAR) using on-body devices identifies specific human actions in unconstrained environments. HAR is challenging due to the inter and intra-variance of human movements; moreover, annotated datasets from on-body…

计算机视觉与模式识别 · 计算机科学 2022-12-05 Shrutarv Awasthi , Fernando Moya Rueda , Gernot A. Fink

Data augmentation, by the introduction of auxiliary variables, has become an ubiquitous technique to improve convergence properties, simplify the implementation or reduce the computational time of inference methods such as Markov chain…

统计方法学 · 统计学 2020-09-30 Maxime Vono , Nicolas Dobigeon , Pierre Chainais

Most previous methods for text data augmentation are limited to simple tasks and weak baselines. We explore data augmentation on hard tasks (i.e., few-shot natural language understanding) and strong baselines (i.e., pretrained models with…

计算与语言 · 计算机科学 2022-03-16 Jing Zhou , Yanan Zheng , Jie Tang , Jian Li , Zhilin Yang

Due to the emergence of various wireless sensing technologies, numerous positioning algorithms have been introduced in the literature, categorized into \emph{geometry-driven positioning} (GP) and \emph{data-driven positioning} (DP). These…

信息论 · 计算机科学 2023-04-11 Seung Min Yu , Jihong Park , Seung-Woo Ko

Data augmentation (DA) is a key factor in medical image analysis, such as in prostate cancer (PCa) detection on magnetic resonance images. State-of-the-art computer-aided diagnosis systems still rely on simplistic spatial transformations to…

Machine learning-based wearable human activity recognition (WHAR) models enable the development of various smart and connected community applications such as sleep pattern monitoring, medication reminders, cognitive health assessment,…

信号处理 · 电气工程与系统科学 2023-04-14 Avijoy Chakma , Abu Zaher Md Faridee , Indrajeet Ghosh , Nirmalya Roy

Training in unsupervised time series anomaly detection is constantly plagued by the discrimination between harmful `anomaly contaminations' and beneficial `hard normal samples'. These two samples exhibit analogous loss behavior that…

机器学习 · 计算机科学 2026-03-17 Ruyi Zhang , Hongzuo Xu , Songlei Jian , Yusong Tan , Haifang Zhou , Rulin Xu

Wearable sensor-based Human Action Recognition (HAR) has made significant strides in recent times. However, the accuracy performance of wearable sensor-based HAR is currently still lagging behind that of visual modalities-based systems,…

多媒体 · 计算机科学 2024-05-21 Jianyuan Ni , Hao Tang , Anne H. H. Ngu , Gaowen Liu , Yan Yan

Human activity recognition (HAR) is a crucial area of research that involves understanding human movements using computer and machine vision technology. Deep learning has emerged as a powerful tool for this task, with models such as…

计算机视觉与模式识别 · 计算机科学 2024-06-25 Mohammad Belal , Taimur Hassan , Abdelfatah Ahmed , Ahmad Aljarah , Nael Alsheikh , Irfan Hussain

In the field of emotion recognition and Human-Machine Interaction (HMI), personalised approaches have exhibited their efficacy in capturing individual-specific characteristics and enhancing affective prediction accuracy. However,…

机器学习 · 计算机科学 2024-04-16 Munachiso Nwadike , Jialin Li , Hanan Salam

Data augmentation is a widely used and effective technique to improve the generalization performance of deep neural networks. Yet, despite often facing limited data availability when working with medical images, it is frequently…

图像与视频处理 · 电气工程与系统科学 2025-07-21 Adam Tupper , Christian Gagné

Data augmentation is an important technique to improve data efficiency and save labeling cost for 3D detection in point clouds. Yet, existing augmentation policies have so far been designed to only utilize labeled data, which limits the…

计算机视觉与模式识别 · 计算机科学 2022-10-25 Zhaoqi Leng , Shuyang Cheng , Benjamin Caine , Weiyue Wang , Xiao Zhang , Jonathon Shlens , Mingxing Tan , Dragomir Anguelov

Current data augmentation techniques and transformations are well suited for improving the size and quality of natural image datasets but are not yet optimized for medical imaging. We hypothesize that sub-optimal data augmentations can…

图像与视频处理 · 电气工程与系统科学 2023-01-06 Tara M. Pattilachan , Ugur Demir , Elif Keles , Debesh Jha , Derk Klatte , Megan Engels , Sanne Hoogenboom , Candice Bolan , Michael Wallace , Ulas Bagci