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Accurately predicting chronological age from DNA methylation patterns is crucial for advancing biological age estimation. However, this task is made challenging by Epigenetic Correlation Drift (ECD) and Heterogeneity Among CpGs (HAC), which…

Genomics · Quantitative Biology 2025-01-07 Zipeng Wu , Daniel Herring , Fabian Spill , James Andrews

Face-based age estimation has attracted enormous attention due to wide applications to public security surveillance, human-computer interaction, etc. With vigorous development of deep learning, age estimation based on deep neural network…

Computer Vision and Pattern Recognition · Computer Science 2022-05-23 Zhicheng Cao , Kaituo Zhang , Liaojun Pang , Heng Zhao

Active Learning (AL) for semantic segmentation is challenging due to heavy class imbalance and different ways of defining "sample" (pixels, areas, etc.), leaving the interpretation of the data distribution ambiguous. We propose…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Amirsaeed Yazdani , Xuelu Li , Vishal Monga

In semi-supervised learning, methods that rely on confidence learning to generate pseudo-labels have been widely proposed. However, increasing research finds that when faced with noisy and biased data, the model's representation network is…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Yanbiao Ma , Licheng Jiao , Fang Liu , Lingling Li , Shuyuan Yang , Xu Liu

We study a family of loss functions named label-distributionally robust (LDR) losses for multi-class classification that are formulated from distributionally robust optimization (DRO) perspective, where the uncertainty in the given label…

Machine Learning · Computer Science 2023-06-29 Dixian Zhu , Yiming Ying , Tianbao Yang

Realistic age-progressed photos provide invaluable biometric information in a wide range of applications. In recent years, deep learning-based approaches have made remarkable progress in modeling the aging process of the human face.…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Yao Xiao , Yijun Zhao

Graph-based semi-supervised learning usually involves two separate stages, constructing an affinity graph and then propagating labels for transductive inference on the graph. It is suboptimal to solve them independently, as the correlation…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Qilin Li , Senjian An , Ling Li , Wanquan Liu

The age estimation task aims to predict the age of an individual by analyzing facial features in an image. The development of age estimation can improve the efficiency and accuracy of various applications (e.g., age verification and secure…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yuntao Shou , Wei Ai , Tao Meng , Nan Yin , Keqin Li

This paper tackles the challenging problem of estimating the intensity of Facial Action Units with few labeled images. Contrary to previous works, our method does not require to manually select key frames, and produces state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Enrique Sanchez , Adrian Bulat , Anestis Zaganidis , Georgios Tzimiropoulos

Facial Attribute Classification (FAC) holds substantial promise in widespread applications. However, FAC models trained by traditional methodologies can be unfair by exhibiting accuracy inconsistencies across varied data subpopulations.…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Fengda Zhang , Qianpei He , Kun Kuang , Jiashuo Liu , Long Chen , Chao Wu , Jun Xiao , Hanwang Zhang

In material characterization, identifying defective areas on a material surface is fundamental. The conventional approach involves measuring the relevant physical properties point-by-point at the predetermined mesh grid points on the…

Machine Learning · Computer Science 2023-04-05 Shota Hozumi , Kentaro Kutsukake , Kota Matsui , Syunya Kusakawa , Toru Ujihara , Ichiro Takeuchi

In multi-task learning, labels are often missing irregularly across samples, which can be fully labeled, partially labeled or unlabeled. The irregular label presence often appears in scientific studies due to experimental limitations. It…

Machine Learning · Computer Science 2025-08-07 Mingqian Li , Qiao Han , Ruifeng Li , Yao Yang , Hongyang Chen

Facial analysis models are increasingly applied in real-world applications that have significant impact on peoples' lives. However, as literature has shown, models that automatically classify facial attributes might exhibit algorithmic…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Camila Kolling , Victor Araujo , Adriano Veloso , Soraia Raupp Musse

Although data is abundant, data labeling is expensive. Semi-supervised learning methods combine a few labeled samples with a large corpus of unlabeled data to effectively train models. This paper introduces our proposed method LiDAM, a…

Machine Learning · Computer Science 2020-11-25 Qun Liu , Matthew Shreve , Raja Bala

Semi supervised learning methods have gained importance in today's world because of large expenses and time involved in labeling the unlabeled data by human experts. The proposed hybrid approach uses SVM and Label Propagation to label the…

Machine Learning · Computer Science 2015-12-08 Aruna Govada , Pravin Joshi , Sahil Mittal , Sanjay K Sahay

Semi-supervised learning (SSL), which aims at leveraging a few labeled images and a large number of unlabeled images for network training, is beneficial for relieving the burden of data annotation in medical image segmentation. According to…

Image and Video Processing · Electrical Eng. & Systems 2022-02-15 Xinkai Zhao , Chaowei Fang , De-Jun Fan , Xutao Lin , Feng Gao , Guanbin Li

Label distribution learning (LDL) differs from multi-label learning which aims at representing the polysemy of instances by transforming single-label values into descriptive degrees. Unfortunately, the feature space of the label…

Machine Learning · Computer Science 2022-10-26 Weiyi Cong , Zhuoran Zheng , Xiuyi Jia

Recent semi-supervised learning (SSL) methods typically include a filtering strategy to improve the quality of pseudo labels. However, these filtering strategies are usually hand-crafted and do not change as the model is updated, resulting…

Machine Learning · Computer Science 2023-09-19 Lei Zhu , Zhanghan Ke , Rynson Lau

Deep neural networks have achieved remarkable performance across various tasks when supplied with large-scale labeled data. However, the collection of labeled data can be time-consuming and labor-intensive. Semi-supervised learning (SSL),…

Machine Learning · Computer Science 2024-06-28 Chaoqi Liang , Guanglei Yang , Lifeng Qiao , Zitong Huang , Hongliang Yan , Yunchao Wei , Wangmeng Zuo

We study the domain adaptation problem with label shift in this work. Under the label shift context, the marginal distribution of the label varies across the training and testing datasets, while the conditional distribution of features…

Machine Learning · Statistics 2023-05-31 Qinglong Tian , Xin Zhang , Jiwei Zhao