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As an effective way to alleviate the burden of data annotation, semi-supervised learning (SSL) provides an attractive solution due to its ability to leverage both labeled and unlabeled data to build a predictive model. While significant…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Hai-Ming Xu , Lingqiao Liu , Hao Chen , Ehsan Abbasnejad , Rafael Felix

Self-supervised learning (SSL) is a powerful tool in machine learning, but understanding the learned representations and their underlying mechanisms remains a challenge. This paper presents an in-depth empirical analysis of SSL-trained…

Machine Learning · Computer Science 2023-06-01 Ido Ben-Shaul , Ravid Shwartz-Ziv , Tomer Galanti , Shai Dekel , Yann LeCun

Self-supervised learning (SSL) is a technique for learning useful representations from unlabeled data. It has been applied effectively to domain adaptation (DA) on images and videos. It is still unknown if and how it can be leveraged for…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Idan Achituve , Haggai Maron , Gal Chechik

Semi-supervised learning (SSL) is a promising approach for training deep classification models using labeled and unlabeled datasets. However, existing SSL methods rely on a large unlabeled dataset, which may not always be available in many…

Machine Learning · Computer Science 2023-09-29 Shin'ya Yamaguchi

Self-supervised learning (SSL) has demonstrated its effectiveness in learning representations through comparison methods that align with human intuition. However, mainstream SSL methods heavily rely on high body datasets with single label,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Jiale Chen

Unsupervised domain adaptation (UDA) and semi-supervised learning (SSL) are two typical strategies to reduce expensive manual annotations in machine learning. In order to learn effective models for a target task, UDA utilizes the available…

Machine Learning · Computer Science 2021-06-02 Yabin Zhang , Haojian Zhang , Bin Deng , Shuai Li , Kui Jia , Lei Zhang

Self-supervised learning (SSL) aims to find meaningful representations from unlabeled data by encoding semantic similarities through data augmentations. Despite its current popularity, theoretical insights about SSL are still scarce. For…

Machine Learning · Computer Science 2025-05-27 Maximilian Fleissner , Pascal Esser , Debarghya Ghoshdastidar

The success of self-supervised learning (SSL) has mostly been attributed to the availability of unlabeled yet large-scale datasets. However, in a specialized domain such as medical imaging which is a lot different from natural images, the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Soumitri Chattopadhyay , Soham Ganguly , Sreejit Chaudhury , Sayan Nag , Samiran Chattopadhyay

Self-supervised learning (SSL) is an efficient approach that addresses the issue of limited training data and annotation shortage. The key part in SSL is its proxy task that defines the supervisory signals and drives the learning toward…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Jiuwen Zhu , Yuexiang Li , S. Kevin Zhou

Time series anomaly detection presents various challenges due to the sequential and dynamic nature of time-dependent data. Traditional unsupervised methods frequently encounter difficulties in generalization, often overfitting to known…

Machine Learning · Statistics 2025-07-30 Aitor Sánchez-Ferrera , Borja Calvo , Jose A. Lozano

Semi-supervised Anomaly Detection (AD) is a kind of data mining task which aims at learning features from partially-labeled datasets to help detect outliers. In this paper, we classify existing semi-supervised AD methods into two…

Machine Learning · Computer Science 2022-10-27 Chao Chen , Dawei Wang , Feng Mao , Zongzhang Zhang , Yang Yu

Deep learning models trained in a supervised setting have revolutionized audio and speech processing. However, their performance inherently depends on the quantity of human-annotated data, making them costly to scale and prone to poor…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-12 Theo Lepage , Reda Dehak

Self-supervised learning (SSL) is recognized as an essential tool for building foundation models for Artificial Intelligence applications. The advances in SSL have been made thanks to vigorous arguments about the principles of SSL and…

Machine Learning · Computer Science 2026-05-13 Josef Kittler , Sara Atito , Muhammad Awais

Following the success of supervised learning, semi-supervised learning (SSL) is now becoming increasingly popular. SSL is a family of methods, which in addition to a labeled training set, also use a sizable collection of unlabeled data for…

Machine Learning · Computer Science 2022-05-12 Erik Wallin , Lennart Svensson , Fredrik Kahl , Lars Hammarstrand

Universal anomaly detection still remains a challenging problem in machine learning and medical image analysis. It is possible to learn an expected distribution from a single class of normative samples, e.g., through epistemic uncertainty…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Johanna P. Müller , Matthew Baugh , Jeremy Tan , Mischa Dombrowski , Bernhard Kainz

Self-Supervised Learning (SSL) has become a very active area of Deep Learning research where it is heavily used as a pre-training method for classification and other tasks. However, the rapid pace of advancements in this area comes at a…

Machine Learning · Computer Science 2022-07-19 Diane Wagner , Fabio Ferreira , Danny Stoll , Robin Tibor Schirrmeister , Samuel Müller , Frank Hutter

Self-supervised learning (SSL) provides a promising alternative for representation learning on hypergraphs without costly labels. However, existing hypergraph SSL models are mostly based on contrastive methods with the instance-level…

Machine Learning · Computer Science 2024-04-19 Fan Li , Xiaoyang Wang , Dawei Cheng , Wenjie Zhang , Ying Zhang , Xuemin Lin

Recently, anomaly detection and localization in multimedia data have received significant attention among the machine learning community. In real-world applications such as medical diagnosis and industrial defect detection, anomalies only…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Chaoqin Huang , Qinwei Xu , Yanfeng Wang , Yu Wang , Ya Zhang

Self-Supervised Learning (SSL) has been shown to learn useful and information-preserving representations. Neural Networks (NNs) are widely applied, yet their weight space is still not fully understood. Therefore, we propose to use SSL to…

Machine Learning · Computer Science 2022-12-15 Konstantin Schürholt , Dimche Kostadinov , Damian Borth

Self-Supervised Learning (SSL) has allowed leveraging large amounts of unlabeled speech data to improve the performance of speech recognition models even with small annotated datasets. Despite this, speech SSL representations may fail while…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-02 Salah Zaiem , Titouan Parcollet , Slim Essid