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Label distribution learning (LDL) is an effective method to predict the relative label description degree (a.k.a. label distribution) of a sample. However, the label distribution is not a complete representation of an instance because it…

Machine Learning · Computer Science 2025-05-29 Jiawei Tang , Yuheng Jia

Long-tailed semi-supervised learning (LTSSL) represents a practical scenario for semi-supervised applications, challenged by skewed labeled distributions that bias classifiers. This problem is often aggravated by discrepancies between…

Machine Learning · Computer Science 2024-07-16 Emanuel Sanchez Aimar , Nathaniel Helgesen , Yonghao Xu , Marco Kuhlmann , Michael Felsberg

Medical image segmentation is critical for computer-aided diagnosis. However, dense pixel-level annotation is time-consuming and expensive, and medical datasets often exhibit severe class imbalance. Such imbalance causes minority structures…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Yingxue Su , Yiheng Zhong , Keying Zhu , Zimu Zhang , Zhuoru Zhang , Yifang Wang , Yuxin Zhang , Jingxin Liu

Scene Graph Generation (SGG) endeavors to predict the relationships between subjects and objects in a given image. Nevertheless, the long-tail distribution of relations often leads to biased prediction on coarse labels, presenting a…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Qishen Chen , Jianzhi Liu , Xinyu Lyu , Lianli Gao , Heng Tao Shen , Jingkuan Song

By utilizing label distribution learning, a probability distribution is assigned for a facial image to express a compound emotion, which effectively improves the problem of label uncertainties and noises occurred in one-hot labels. In…

Computer Vision and Pattern Recognition · Computer Science 2021-07-26 Shasha Mao , Guanghui Shi , Licheng Jiao , Shuiping Gou , Yangyang Li , Lin Xiong , Boxin Shi

Face recognition in unconstrained environments is challenging due to variations in illumination, quality of sensing, motion blur and etc. An individual's face appearance can vary drastically under different conditions creating a gap between…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 S. W. Arachchilage , E. Izquierdo

Semi-supervised multi-label learning (SSMLL) aims to address the challenge of limited labeled data in multi-label learning (MLL) by leveraging unlabeled data to improve the model's performance. While pseudo-labeling has become a dominant…

Machine Learning · Computer Science 2025-12-03 Bo Han , Zhuoming Li , Xiaoyu Wang , Yaxin Hou , Hui Liu , Junhui Hou , Yuheng Jia

Facial Expression Recognition (FER) systems based on deep learning have achieved impressive performance in recent years. However, these models often exhibit demographic biases, particularly with respect to age, which can compromise their…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 F. Xavier Gaya-Morey , Julia Sanchez-Perez , Cristina Manresa-Yee , Jose M. Buades-Rubio

This paper presents a simple yet effective two-stage framework for semi-supervised medical image segmentation. Unlike prior state-of-the-art semi-supervised segmentation methods that predominantly rely on pseudo supervision directly on…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Huimin Wu , Xiaomeng Li , Kwang-Ting Cheng

The traditional manual age estimation method is crucial labor based on many kinds of the X-Ray image. Some current studies have shown that lateral cephalometric(LC) images can be used to estimate age. However, these methods are based on…

Image and Video Processing · Electrical Eng. & Systems 2021-12-08 Ningtao Liu

List-wise learning to rank methods are considered to be the state-of-the-art. One of the major problems with these methods is that the ambiguous nature of relevance labels in learning to rank data is ignored. Ambiguity of relevance labels…

Information Retrieval · Computer Science 2017-07-26 Rolf Jagerman , Julia Kiseleva , Maarten de Rijke

Recently, deep learning-based facial landmark detection has achieved significant improvement. However, the semantic ambiguity problem degrades detection performance. Specifically, the semantic ambiguity causes inconsistent annotation and…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Zhenglin Zhou , Huaxia Li , Hong Liu , Nanyang Wang , Gang Yu , Rongrong Ji

Semi-supervised learning (SSL) methods assume that labeled data, unlabeled data and test data are from the same distribution. Open-set semi-supervised learning (Open-set SSL) considers a more practical scenario, where unlabeled data and…

Machine Learning · Computer Science 2024-04-16 Yang Yu , Danruo Deng , Furui Liu , Yueming Jin , Qi Dou , Guangyong Chen , Pheng-Ann Heng

Domain shift poses a significant challenge in Cross-Domain Facial Expression Recognition (CD-FER) due to the distribution variation across different domains. Current works mainly focus on learning domain-invariant features through global…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Yuefang Gao , Yuhao Xie , Zeke Zexi Hu , Tianshui Chen , Liang Lin

Over the last years, huge resources of biological and medical data have become available for research. This data offers great chances for machine learning applications in health care, e.g. for precision medicine, but is also challenging to…

Quantitative Methods · Quantitative Biology 2016-12-21 Lisa Handl , Adrin Jalali , Michael Scherer , Nico Pfeifer

The major challenge of learning from multi-label data has arisen from the overwhelming size of label space which makes this problem NP-hard. This problem can be alleviated by gradually involving easy to hard tags into the learning process.…

Machine Learning · Computer Science 2019-10-09 Seyed Amjad Seyedi , S. Siamak Ghodsi , Fardin Akhlaghian , Mahdi Jalili , Parham Moradi

Label Distribution Learning (LDL) aims to characterize the polysemy of an instance by building a set of descriptive degrees corresponding to the instance. In recent years, researchers seek to model to obtain an accurate label distribution…

Machine Learning · Computer Science 2025-04-03 Pu Wang , Yu Zhang , Zhuoran Zheng

Label distribution learning (LDL) is an interpretable and general learning paradigm that has been applied in many real-world applications. In contrast to the simple logical vector in single-label learning (SLL) and multi-label learning…

Machine Learning · Computer Science 2020-07-08 Xinyuan Liu , Jihua Zhu , Qinghai Zheng , Zhongyu Li , Ruixin Liu , Jun Wang

Algorithmic bias in medical imaging can perpetuate health disparities, yet its causes remain poorly understood in segmentation tasks. While fairness has been extensively studied in classification, segmentation remains underexplored despite…

Image and Video Processing · Electrical Eng. & Systems 2025-11-04 Aditya Parikh , Sneha Das , Aasa Feragen

Automated cephalometric landmark detection is crucial in real-world orthodontic diagnosis. Current studies mainly focus on only adult subjects, neglecting the clinically crucial scenario presented by adolescents whose landmarks often…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Han Wu , Chong Wang , Lanzhuju Mei , Tong Yang , Min Zhu , Dingggang Shen , Zhiming Cui