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Deep learning models, especially convolutional neural networks, have achieved impressive results in medical image classification. However, these models often produce overconfident predictions, which can undermine their reliability in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Kushan Choudhury , Shubhrodeep Roy , Ankur Chanda , Shubhajit Biswas , Somenath Kuiry

Current works formulate facial action unit (AU) recognition as a supervised learning problem, requiring fully AU-labeled facial images during training. It is challenging if not impossible to provide AU annotations for large numbers of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Shangfei Wang , Yanan Chang , Guozhu Peng , Bowen Pan

Feature noise and label noise are ubiquitous in practical scenarios, which pose great challenges for training a robust machine learning model. Most previous approaches usually deal with only a single problem of either feature noise or label…

Machine Learning · Computer Science 2024-07-08 Yang Wei , Shuo Chen , Shanshan Ye , Bo Han , Chen Gong

Imbalanced datasets pose significant challenges in areas including neuroscience, cognitive science, and medical diagnostics, where accurately detecting minority classes is essential for robust model performance. This study addresses the…

Machine Learning · Computer Science 2025-06-12 Minheng Xiao

Imperfections in data annotation, known as label noise, are detrimental to the training of machine learning models and have an often-overlooked confounding effect on the assessment of model performance. Nevertheless, employing experts to…

High-quality annotated images are significant to deep facial expression recognition (FER) methods. However, uncertain labels, mostly existing in large-scale public datasets, often mislead the training process. In this paper, we achieve…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Yang Liu , Xingming Zhang , Janne Kauttonen , Guoying Zhao

Due to the lack of labels and the domain diversities, it is a challenge to study person re-identification in the cross-domain setting. An admirable method is to optimize the target model by assigning pseudo-labels for unlabeled samples…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Hongliang Zhang , Shoudong Han , Xiaofeng Pan , Jun Zhao

Learning with noisy labels has gained increasing attention because the inevitable imperfect labels in real-world scenarios can substantially hurt the deep model performance. Recent studies tend to regard low-loss samples as clean ones and…

Machine Learning · Computer Science 2024-02-20 Huafeng Liu , Mengmeng Sheng , Zeren Sun , Yazhou Yao , Xian-Sheng Hua , Heng-Tao Shen

Detecting facial action units (AU) is one of the fundamental steps in automatic recognition of facial expression of emotions and cognitive states. Though there have been a variety of approaches proposed for this task, most of these models…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Mihee Lee , Ognjen Rudovic , Vladimir Pavlovic , Maja Pantic

Because of the ambiguous and subjective property of the facial expression recognition (FER) task, the label noise is widely existing in the FER dataset. For this problem, in the training phase, current FER methods often directly predict…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Xiang Zhang , Yan Lu , Huan Yan , Jingyang Huang , Yusheng Ji , Yu Gu

Recent studies on the automatic detection of facial action unit (AU) have extensively relied on large-sized annotations. However, manually AU labeling is difficult, time-consuming, and costly. Most existing semi-supervised works ignore the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Xiaotian Li , Xiang Zhang , Taoyue Wang , Lijun Yin

Designing robust algorithms capable of training accurate neural networks on uncurated datasets from the web has been the subject of much research as it reduces the need for time consuming human labor. The focus of many previous research…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Paul Albert , Eric Arazo , Tarun Krishna , Noel E. O'Connor , Kevin McGuinness

The objective of machine unlearning (MU) is to eliminate previously learned data from a model. However, it is challenging to strike a balance between computation cost and performance when using existing MU techniques. Taking inspiration…

Machine Learning · Computer Science 2024-06-13 Zonglin Di , Zhaowei Zhu , Jinghan Jia , Jiancheng Liu , Zafar Takhirov , Bo Jiang , Yuanshun Yao , Sijia Liu , Yang Liu

Facial Action Units (AUs) represent a set of facial muscular activities and various combinations of AUs can represent a wide range of emotions. AU recognition is often used in many applications, including marketing, healthcare, education,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-09 Junya Saito , Xiaoyu Mi , Akiyoshi Uchida , Sachihiro Youoku , Takahisa Yamamoto , Kentaro Murase , Osafumi Nakayama

Although deep face recognition benefits significantly from large-scale training data, a current bottleneck is the labelling cost. A feasible solution to this problem is semi-supervised learning, exploiting a small portion of labelled data…

Computer Vision and Pattern Recognition · Computer Science 2021-05-11 Yuchi Liu , Hailin Shi , Hang Du , Rui Zhu , Jun Wang , Liang Zheng , Tao Mei

Label noise in training data can significantly degrade a model's generalization performance for supervised learning tasks. Here we focus on the problem that noisy labels are primarily mislabeled samples, which tend to be concentrated near…

Machine Learning · Computer Science 2021-03-16 Hao-Chiang Shao , Hsin-Chieh Wang , Weng-Tai Su , Chia-Wen Lin

Given the similarity between facial expression categories, the presence of compound facial expressions, and the subjectivity of annotators, facial expression recognition (FER) datasets often suffer from ambiguity and noisy labels. Ambiguous…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Ziyang Zhang , Xiao Sun , Liuwei An , Meng Wang

Automatic facial action unit (AU) recognition is a challenging task due to the scarcity of manual annotations. To alleviate this problem, a large amount of efforts has been dedicated to exploiting various methods which leverage numerous…

Computer Vision and Pattern Recognition · Computer Science 2021-08-02 Jingwei Yan , Jingjing Wang , Qiang Li , Chunmao Wang , Shiliang Pu

Label smoothing is an effective regularization tool for deep neural networks (DNNs), which generates soft labels by applying a weighted average between the uniform distribution and the hard label. It is often used to reduce the overfitting…

Computer Vision and Pattern Recognition · Computer Science 2021-07-23 Chang-Bin Zhang , Peng-Tao Jiang , Qibin Hou , Yunchao Wei , Qi Han , Zhen Li , Ming-Ming Cheng

Facial Action Unit (AU) detection is a crucial task in affective computing and social robotics as it helps to identify emotions expressed through facial expressions. Anatomically, there are innumerable correlations between AUs, which…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Xin Liu , Kaishen Yuan , Xuesong Niu , Jingang Shi , Zitong Yu , Huanjing Yue , Jingyu Yang