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Semi-supervised learning (SSL) algorithms struggle to perform well when exposed to imbalanced training data. In this scenario, the generated pseudo-labels can exhibit a bias towards the majority class, and models that employ these…

机器学习 · 计算机科学 2024-09-18 Zeju Li , Ying-Qiu Zheng , Chen Chen , Saad Jbabdi

Existing semi-supervised learning (SSL) methods assume that labeled and unlabeled data share the same class space. However, in real-world applications, unlabeled data always contain classes not present in the labeled set, which may cause…

机器学习 · 计算机科学 2024-01-17 Wenjuan Xi , Xin Song , Weili Guo , Yang Yang

Medical image classification is a challenging task due to the scarcity of labeled samples and class imbalance caused by the high variance in disease prevalence. Semi-supervised learning (SSL) methods can mitigate these challenges by…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Md Junaid Mahmood , Pranaw Raj , Divyansh Agarwal , Suruchi Kumari , Pravendra Singh

Transductive graph-based semi-supervised learning methods usually build an undirected graph utilizing both labeled and unlabeled samples as vertices. Those methods propagate label information of labeled samples to neighbors through their…

机器学习 · 计算机科学 2013-12-25 Fengqi Li , Chuang Yu , Nanhai Yang , Feng Xia , Guangming Li , Fatemeh Kaveh-Yazdy

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…

机器学习 · 计算机科学 2022-03-14 Suraj Kothawade , Pavan Kumar Reddy , Ganesh Ramakrishnan , Rishabh Iyer

Pseudo-labeling has proven to be a promising semi-supervised learning (SSL) paradigm. Existing pseudo-labeling methods commonly assume that the class distributions of training data are balanced. However, such an assumption is far from…

机器学习 · 计算机科学 2023-03-03 Renzhen Wang , Xixi Jia , Quanziang Wang , Yichen Wu , Deyu Meng

Existing semi-supervised learning algorithms adopt pseudo-labeling and consistency regulation techniques to introduce supervision signals for unlabeled samples. To overcome the inherent limitation of threshold-based pseudo-labeling, prior…

机器学习 · 计算机科学 2024-07-10 Zhiyu Wu , Jinshi Cui

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,…

计算机视觉与模式识别 · 计算机科学 2022-09-12 Fan Yang , Kai Wu , Shuyi Zhang , Guannan Jiang , Yong Liu , Feng Zheng , Wei Zhang , Chengjie Wang , Long Zeng

In semantic segmentation, the creation of pixel-level labels for training data incurs significant costs. To address this problem, semi-supervised learning, which utilizes a small number of labeled images alongside unlabeled images to…

计算机视觉与模式识别 · 计算机科学 2026-04-09 Takahiro Mano , Reiji Saito , Kazuhiro Hotta

Given an unlabeled dataset and an annotation budget, we study how to selectively label a fixed number of instances so that semi-supervised learning (SSL) on such a partially labeled dataset is most effective. We focus on selecting the right…

机器学习 · 计算机科学 2023-08-24 Xudong Wang , Long Lian , Stella X. Yu

Self- and semi-supervised machine learning techniques leverage unlabeled data for improving downstream task performance. These methods are especially valuable for remote sensing tasks where producing labeled ground truth datasets can be…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Chaitanya Patel , Shashank Sharma , Valerie J. Pasquarella , Varun Gulshan

Pseudo-label-based semi-supervised learning (SSL) algorithms trained on a class-imbalanced set face two cascading challenges: 1) Classifiers tend to be biased towards majority classes, and 2) Biased pseudo-labels are used for training. It…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Hyuck Lee , Heeyoung Kim

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…

计算机视觉与模式识别 · 计算机科学 2024-01-17 Mengtian Li , Shaohui Lin , Zihan Wang , Yunhang Shen , Baochang Zhang , Lizhuang Ma

Semi-Supervised Learning (SSL) is implemented when algorithms are trained on both labeled and unlabeled data. This is a very common application of ML as it is unrealistic to obtain a fully labeled dataset. Researchers have tackled three…

机器学习 · 计算机科学 2023-08-16 Jason Lu , Michael Ma , Huaze Xu , Zixi Xu

Semi-supervised learning (SSL) often suffers under class imbalance, where pseudo-labeling amplifies majority bias and suppresses minority performance. We address this issue with a lightweight framework that, to our knowledge, is the first…

机器学习 · 计算机科学 2026-03-04 Kohki Akiba , Shinnosuke Matsuo , Shota Harada , Ryoma Bise

Semi-Supervised Learning (SSL) can leverage abundant unlabeled data to boost model performance. However, the class-imbalanced data distribution in real-world scenarios poses great challenges to SSL, resulting in performance degradation.…

计算机视觉与模式识别 · 计算机科学 2025-01-13 Yin Wang , Zixuan Wang , Hao Lu , Zhen Qin , Hailiang Zhao , Guanjie Cheng , Ge Su , Li Kuang , Mengchu Zhou , Shuiguang Deng

Semi-supervised learning (SSL) provides an effective means of leveraging unlabelled data to improve a model performance. Even though the domain has received a considerable amount of attention in the past years, most methods present the…

机器学习 · 统计学 2023-03-06 Hugo Schmutz , Olivier Humbert , Pierre-Alexandre Mattei

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

计算机视觉与模式识别 · 计算机科学 2022-06-14 Zhuoran Yu , Yin Li , Yong Jae Lee

The critical challenge of Semi-Supervised Learning (SSL) is how to effectively leverage the limited labeled data and massive unlabeled data to improve the model's generalization performance. In this paper, we first revisit the popular…

机器学习 · 计算机科学 2023-03-16 Hao Chen , Ran Tao , Yue Fan , Yidong Wang , Jindong Wang , Bernt Schiele , Xing Xie , Bhiksha Raj , Marios Savvides

With the development of deep learning, supervised learning methods perform well in remote sensing images (RSIs) scene classification. However, supervised learning requires a huge number of annotated data for training. When labeled samples…

计算机视觉与模式识别 · 计算机科学 2020-10-05 Chao Tao , Ji Qi , Weipeng Lu , Hao Wang , Haifeng Li