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In this paper, we delve into two key techniques in Semi-Supervised Object Detection (SSOD), namely pseudo labeling and consistency training. We observe that these two techniques currently neglect some important properties of object…

Computer Vision and Pattern Recognition · Computer Science 2022-07-21 Gang Li , Xiang Li , Yujie Wang , Yichao Wu , Ding Liang , Shanshan Zhang

Semi-supervised learning has attracted much attention due to its less dependence on acquiring abundant annotations from experts compared to fully supervised methods, which is especially important for medical image segmentation which…

Computer Vision and Pattern Recognition · Computer Science 2024-10-24 Yichi Zhang , Jin Yang , Yuchen Liu , Yuan Cheng , Yuan Qi

Beyond attaining domain generalization (DG), visual recognition models should also be data-efficient during learning by leveraging limited labels. We study the problem of Semi-Supervised Domain Generalization (SSDG) which is crucial for…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Adnan Khan , Mai A. Shaaban , Muhammad Haris Khan

The premise of semi-supervised learning (SSL) is that combining labeled and unlabeled data yields significantly more accurate models. Despite empirical successes, the theoretical understanding of SSL is still far from complete. In this…

Machine Learning · Statistics 2024-09-06 Eyar Azar , Boaz Nadler

Current Semi-supervised Learning (SSL) adopts the pseudo-labeling strategy and further filters pseudo-labels based on confidence thresholds. However, this mechanism has notable drawbacks: 1) setting the reasonable threshold is an open…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Jiaqi Wu , Junbiao Pang , Qingming Huang

Semi-Supervised Object Detection (SSOD) has achieved resounding success by leveraging unlabeled data to improve detection performance. However, in Open Scene Semi-Supervised Object Detection (O-SSOD), unlabeled data may contains unknown…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Jingyu Zhuang , Kuo Wang , Liang Lin , Guanbin Li

Semi-supervised few-shot learning consists in training a classifier to adapt to new tasks with limited labeled data and a fixed quantity of unlabeled data. Many sophisticated methods have been developed to address the challenges this…

Computer Vision and Pattern Recognition · Computer Science 2022-09-29 Xiu-Shen Wei , He-Yang Xu , Faen Zhang , Yuxin Peng , Wei Zhou

Semi-supervised anomaly detection is a common problem, as often the datasets containing anomalies are partially labeled. We propose a canonical framework: Semi-supervised Pseudo-labeler Anomaly Detection with Ensembling (SPADE) that isn't…

Machine Learning · Computer Science 2022-12-02 Jinsung Yoon , Kihyuk Sohn , Chun-Liang Li , Sercan O. Arik , Tomas Pfister

There has been an increasing interest in semi-supervised learning in the recent years because of the great number of datasets with a large number of unlabeled data but only a few labeled samples. Semi-supervised learning algorithms can work…

Machine Learning · Computer Science 2020-03-26 Pedro H. M. Braga , Hansenclever F. Bassani

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…

Machine Learning · Computer Science 2023-08-16 Jason Lu , Michael Ma , Huaze Xu , Zixi Xu

Obtaining gold standard annotated data for object detection is often costly, involving human-level effort. Semi-supervised object detection algorithms solve the problem with a small amount of gold-standard labels and a large unlabelled…

Computer Vision and Pattern Recognition · Computer Science 2022-06-03 Somnath Hazra , Pallab Dasgupta

Semi-supervised learning (SSL) has been widely explored in recent years, and it is an effective way of leveraging unlabeled data to reduce the reliance on labeled data. In this work, we adjust neural processes (NPs) to the semi-supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Jianfeng Wang , Xiaolin Hu , Thomas Lukasiewicz

Self-supervised learning (SSL) methods targeting scene images have seen a rapid growth recently, and they mostly rely on either a dedicated dense matching mechanism or a costly unsupervised object discovery module. This paper shows that…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Ke Zhu , Minghao Fu , Jianxin Wu

Learning from large amounts of unsupervised data and a small amount of supervision is an important open problem in computer vision. We propose a new semi-supervised learning method, Semantic Positives via Pseudo-Labels (SemPPL), that…

Computer Vision and Pattern Recognition · Computer Science 2024-01-11 Matko Bošnjak , Pierre H. Richemond , Nenad Tomasev , Florian Strub , Jacob C. Walker , Felix Hill , Lars Holger Buesing , Razvan Pascanu , Charles Blundell , Jovana Mitrovic

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

In Semi-Supervised Semi-Private (SP) learning, the learner has access to both public unlabelled and private labelled data. We propose a computationally efficient algorithm that, under mild assumptions on the data, provably achieves…

Machine Learning · Computer Science 2023-06-08 Francesco Pinto , Yaxi Hu , Fanny Yang , Amartya Sanyal

Generalizing the medical image segmentation algorithms to unseen domains is an important research topic for computer-aided diagnosis and surgery. Most existing methods require a fully labeled dataset in each source domain. Although some…

Computer Vision and Pattern Recognition · Computer Science 2022-03-18 Huifeng Yao , Xiaowei Hu , Xiaomeng Li

To improve instance-level detection/segmentation performance, existing self-supervised and semi-supervised methods extract either task-unrelated or task-specific training signals from unlabeled data. We show that these two approaches, at…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Lu Qi , Jason Kuen , Zhe Lin , Jiuxiang Gu , Fengyun Rao , Dian Li , Weidong Guo , Zhen Wen , Ming-Hsuan Yang , Jiaya Jia

The advancement of deep learning has greatly improved supervised image classification. However, labeling data is costly, prompting research into unsupervised learning methods such as contrastive learning. In real-world scenarios, fully…

Artificial Intelligence · Computer Science 2026-01-09 Shogo Nakayama , Masahiro Okuda

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