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Semi-supervised learning (SSL), thanks to the significant reduction of data annotation costs, has been an active research topic for large-scale 3D scene understanding. However, the existing SSL-based methods suffer from severe training…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Mengtian Li , Shaohui Lin , Zihan Wang , Yunhang Shen , Baochang Zhang , Lizhuang Ma

Pseudo-label-based semi-supervised learning (SSL) has achieved great success on raw data utilization. However, its training procedure suffers from confirmation bias due to the noise contained in self-generated artificial labels. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Fan Yang , Kai Wu , Shuyi Zhang , Guannan Jiang , Yong Liu , Feng Zheng , Wei Zhang , Chengjie Wang , Long Zeng

Semi-Supervised Learning (SSL) is a framework that utilizes both labeled and unlabeled data to enhance model performance. Conventional SSL methods operate under the assumption that labeled and unlabeled data share the same label space.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Noam Fluss , Guy Hacohen , Daphna Weinshall

Self-supervised learning (SSL) is a scalable way to learn general visual representations since it learns without labels. However, large-scale unlabeled datasets in the wild often have long-tailed label distributions, where we know little…

Machine Learning · Computer Science 2022-05-24 Hong Liu , Jeff Z. HaoChen , Adrien Gaidon , Tengyu Ma

Semi-supervised learning (SSL) provides a powerful framework for leveraging unlabeled data when labels are limited or expensive to obtain. SSL algorithms based on deep neural networks have recently proven successful on standard benchmark…

Machine Learning · Computer Science 2019-05-28 Jiaxing Wang , Yin Zheng , Xiaoshuang Chen , Junzhou Huang , Jian Cheng

Semi-supervised Learning (SSL) has witnessed great success owing to the impressive performances brought by various methods based on pseudo labeling and consistency regularization. However, we argue that existing methods might fail to…

Differing from traditional semi-supervised learning, class-imbalanced semi-supervised learning presents two distinct challenges: (1) The imbalanced distribution of training samples leads to model bias towards certain classes, and (2) the…

Machine Learning · Computer Science 2023-12-29 Lan Li , Bowen Tao , Lu Han , De-chuan Zhan , Han-jia Ye

Medical image classification is often challenging for two reasons: a lack of labelled examples due to expensive and time-consuming annotation protocols, and imbalanced class labels due to the relative scarcity of disease-positive…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Tri Huynh , Aiden Nibali , Zhen He

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

Current semi-supervised learning (SSL) methods assume a balance between the number of data points available for each class in both the labeled and the unlabeled data sets. However, there naturally exists a class imbalance in most real-world…

Machine Learning · Computer Science 2022-03-14 Suraj Kothawade , Pavan Kumar Reddy , Ganesh Ramakrishnan , Rishabh Iyer

Recent state-of-the-art methods in imbalanced semi-supervised learning (SSL) rely on confidence-based pseudo-labeling with consistency regularization. To obtain high-quality pseudo-labels, a high confidence threshold is typically adopted.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Zhuoran Yu , Yin Li , Yong Jae Lee

The problem of fully supervised classification is that it requires a tremendous amount of annotated data, however, in many datasets a large portion of data is unlabeled. To alleviate this problem semi-supervised learning (SSL) leverages the…

Machine Learning · Computer Science 2022-07-26 Ehsan Kazemi

There has been increasing attention to semi-supervised learning (SSL) approaches in machine learning to forming a classifier in situations where the training data for a classifier consists of a limited number of classified observations but…

Machine Learning · Statistics 2021-11-10 Daniel Ahfock , Geoffrey J. McLachlan

Semi-supervised Learning (SSL) reduces the need for extensive annotations in deep learning, but the more realistic challenge of imbalanced data distribution in SSL remains largely unexplored. In Class Imbalanced Semi-supervised Learning…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Qianhan Feng , Lujing Xie , Shijie Fang , Tong Lin

Domain adaptive semantic segmentation aims to learn a model with the supervision of source domain data, and produce satisfactory dense predictions on unlabeled target domain. One popular solution to this challenging task is self-training,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-21 Ruihuang Li , Shuai Li , Chenhang He , Yabin Zhang , Xu Jia , Lei Zhang

Semi-supervised object detection (SSOD) has made significant progress with the development of pseudo-label-based end-to-end methods. However, many of these methods face challenges due to class imbalance, which hinders the effectiveness of…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Purbayan Kar , Vishal Chudasama , Naoyuki Onoe , Pankaj Wasnik

Semi-supervised learning (SSL) can reduce the need for large labelled datasets by incorporating unlabelled data into the training. This is particularly interesting for semantic segmentation, where labelling data is very costly and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Sebastian Scherer , Robin Schön , Rainer Lienhart

Semi-supervised learning (SSL) addresses the lack of labeled data by exploiting large unlabeled data through pseudolabeling. However, in the extremely low-label regime, pseudo labels could be incorrect, a.k.a. the confirmation bias, and the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-09 Xun Xu , Jingyi Liao , Lile Cai , Manh Cuong Nguyen , Kangkang Lu , Wanyue Zhang , Yasin Yazici , Chuan Sheng Foo

Semi-supervised learning (SSL) has achieved great success in leveraging a large amount of unlabeled data to learn a promising classifier. A popular approach is pseudo-labeling that generates pseudo labels only for those unlabeled data with…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Qinyi Deng , Yong Guo , Zhibang Yang , Haolin Pan , Jian Chen

It is well known that the success of deep neural networks is greatly attributed to large-scale labeled datasets. However, it can be extremely time-consuming and laborious to collect sufficient high-quality labeled data in most practical…

Computer Vision and Pattern Recognition · Computer Science 2022-02-18 Yao Yao , Junyi Shen , Jin Xu , Bin Zhong , Li Xiao