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Human activity recognition (HAR) will be an essential function of various emerging applications. However, HAR typically encounters challenges related to modality limitations and label scarcity, leading to an application gap between current…

机器学习 · 计算机科学 2024-04-03 Lilin Xu , Chaojie Gu , Rui Tan , Shibo He , Jiming Chen

In this paper, we consider a novel machine learning problem, that is, learning a classifier from noisy label distributions. In this problem, each instance with a feature vector belongs to at least one group. Then, instead of the true label…

机器学习 · 计算机科学 2017-08-17 Yuya Yoshikawa

Low-resolution infrared-based human activity recognition (HAR) attracted enormous interests due to its low-cost and private. In this paper, a novel semi-supervised crossdomain neural network (SCDNN) based on 8 $\times$ 8 low-resolution…

信号处理 · 电气工程与系统科学 2024-03-06 Cunyi Yin , Xiren Miao , Jing Chen , Hao Jiang , Deying Chen , Yixuan Tong , Shaocong Zheng

Bayesian Neural Networks with Latent Variables (BNN+LVs) capture predictive uncertainty by explicitly modeling model uncertainty (via priors on network weights) and environmental stochasticity (via a latent input noise variable). In this…

机器学习 · 计算机科学 2022-09-19 Yaniv Yacoby , Weiwei Pan , Finale Doshi-Velez

Human Activity Recognition (HAR) is one of the essential building blocks of so many applications like security, monitoring, the internet of things and human-robot interaction. The research community has developed various methodologies to…

人机交互 · 计算机科学 2022-06-10 Farhad Nazari , Navid Mohajer , Darius Nahavandi , Abbas Khosravi , Saeid Nahavandi

Label-noise learning (LNL) aims to increase the model's generalization given training data with noisy labels. To facilitate practical LNL algorithms, researchers have proposed different label noise types, ranging from class-conditional to…

机器学习 · 计算机科学 2024-02-13 Jingfeng Zhang , Bo Song , Haohan Wang , Bo Han , Tongliang Liu , Lei Liu , Masashi Sugiyama

We introduce a novel method for training machine learning models in the presence of noisy labels, which are prevalent in domains such as medical diagnosis and autonomous driving and have the potential to degrade a model's generalization…

机器学习 · 计算机科学 2024-06-26 Farooq Ahmad Wani , Maria Sofia Bucarelli , Fabrizio Silvestri

While prior work has shown that Federated Learning updates can leak sensitive information, label reconstruction attacks, which aim to recover input labels from shared gradients, have not yet been examined in the context of Human Activity…

机器学习 · 计算机科学 2025-08-08 Marius Bock , Maximilian Hopp , Kristof Van Laerhoven , Michael Moeller

Learning with Noisy labels (LNL) poses a significant challenge for the Machine Learning community. Some of the most widely used approaches that select as clean samples for which the model itself (the in-training model) has high confidence,…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Chen Feng , Georgios Tzimiropoulos , Ioannis Patras

Facial expression recognition (FER) remains a challenging task due to the ambiguity of expressions. The derived noisy labels significantly harm the performance in real-world scenarios. To address this issue, we present a new FER model named…

计算机视觉与模式识别 · 计算机科学 2023-07-21 Zhiyu Wu , Jinshi Cui

Label-noise or curated unlabeled data is used to compensate for the assumption of clean labeled data in training the conditional generative adversarial network; however, satisfying such an extended assumption is occasionally laborious or…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Kai Katsumata , Duc Minh Vo , Tatsuya Harada , Hideki Nakayama

Labelling of data for supervised learning can be costly and time-consuming and the risk of incorporating label noise in large data sets is imminent. When training a flexible discriminative model using a strictly proper loss, such noise will…

机器学习 · 统计学 2022-05-13 Amanda Olmin , Fredrik Lindsten

The presence of noisy labels in a training dataset can significantly impact the performance of machine learning models. To tackle this issue, researchers have explored methods for Learning with Noisy Labels to identify clean samples and…

机器学习 · 计算机科学 2023-10-30 Sumyeong Ahn , Sihyeon Kim , Jongwoo Ko , Se-Young Yun

Real-world image classification tasks tend to be complex, where expert labellers are sometimes unsure about the classes present in the images, leading to the issue of learning with noisy labels (LNL). The ill-posedness of the LNL task…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Zheng Zhang , Cuong Nguyen , Kevin Wells , Thanh-Toan Do , Gustavo Carneiro

Learning with noisy labels (LNL) aims at designing strategies to improve model performance and generalization by mitigating the effects of model overfitting to noisy labels. The key success of LNL lies in identifying as many clean samples…

计算机视觉与模式识别 · 计算机科学 2022-08-08 Jichang Li , Guanbin Li , Feng Liu , Yizhou Yu

Imperfect labels are ubiquitous in real-world datasets. Several recent successful methods for training deep neural networks (DNNs) robust to label noise have used two primary techniques: filtering samples based on loss during a warm-up…

计算机视觉与模式识别 · 计算机科学 2021-04-05 Kento Nishi , Yi Ding , Alex Rich , Tobias Höllerer

Learning from noisy labels (LNL) is crucial in deep learning, in which one of the approaches is to identify clean-label samples from poorly-annotated datasets. Such an identification is challenging because the conventional LNL problem,…

机器学习 · 计算机科学 2025-09-26 Cuong Nguyen , Thanh-Toan Do , Gustavo Carneiro

Noisy labels are both inevitable and problematic in machine learning methods, as they negatively impact models' generalization ability by causing overfitting. In the context of learning with noise, the transition matrix plays a crucial role…

机器学习 · 计算机科学 2025-03-26 Jiahui Li , Tai-Wei Chang , Kun Kuang , Ximing Li , Long Chen , Jun Zhou

Active learning for classification seeks to reduce the cost of labeling samples by finding unlabeled examples about which the current model is least certain and sending them to an annotator/expert to label. Bayesian theory can provide a…

密码学与安全 · 计算机科学 2025-07-08 Ahmed Bensaoud , Jugal Kalita

Deep neural networks (DNNs) have achieved great success in a wide variety of medical image analysis tasks. However, these achievements indispensably rely on the accurately-annotated datasets. If with the noisy-labeled images, the training…

计算机视觉与模式识别 · 计算机科学 2019-01-25 Cheng Xue , Qi Dou , Xueying Shi , Hao Chen , Pheng Ann Heng