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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

Electroencephalography (EEG) research typically focuses on tasks with narrowly defined objectives, but recent studies are expanding into the use of unlabeled data within larger models, aiming for a broader range of applications. This…

Signal Processing · Electrical Eng. & Systems 2025-05-26 Anders Gjølbye , Lina Skerath , William Lehn-Schiøler , Nicolas Langer , Lars Kai Hansen

Deep neural network-based classifiers trained with the categorical cross-entropy (CCE) loss are sensitive to label noise in the training data. One common type of method that can mitigate the impact of label noise can be viewed as supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Aritra Ghosh , Andrew Lan

Deep learning has demonstrated significant improvements in medical image segmentation using a sufficiently large amount of training data with manual labels. Acquiring well-representative labels requires expert knowledge and exhaustive…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Jinxi Xiang , Zhuowei Li , Wenji Wang , Qing Xia , Shaoting Zhang

Labeling of multivariate biomedical time series data is a laborious and expensive process. Self-supervised contrastive learning alleviates the need for large, labeled datasets through pretraining on unlabeled data. However, for multivariate…

Machine Learning · Statistics 2023-07-21 Thea Brüsch , Mikkel N. Schmidt , Tommy S. Alstrøm

Self-supervised learning (SSL) methods aim to exploit the abundance of unlabelled data for machine learning (ML), however the underlying principles are often method-specific. An SSL framework derived from biological first principles of…

Machine Learning · Computer Science 2023-08-03 Franz Scherr , Qinghai Guo , Timoleon Moraitis

EEG-based Emotion recognition holds significant promise for applications in human-computer interaction, medicine, and neuroscience. While deep learning has shown potential in this field, current approaches usually rely on large-scale…

Signal Processing · Electrical Eng. & Systems 2024-03-08 Hanqi Wang , Tao Chen , Liang Song

Electroencephalography (EEG) plays a crucial role in brain-computer interfaces (BCIs) and neurological diagnostics, but its real-world deployment faces challenges due to noise artifacts, missing data, and high annotation costs. We introduce…

Signal Processing · Electrical Eng. & Systems 2025-10-24 Meghna Roy Chowdhury , Yi Ding , Shreyas Sen

Electrocardiogram (ECG) signal is one of the most effective sources of information mainly employed for the diagnosis and prediction of cardiovascular diseases (CVDs) connected with the abnormalities in heart rhythm. Clearly, single modality…

Signal Processing · Electrical Eng. & Systems 2022-10-13 Thinh Phan , Duc Le , Patel Brijesh , Donald Adjeroh , Jingxian Wu , Morten Olgaard Jensen , Ngan Le

Deep neural networks have been widely used in communication signal recognition and achieved remarkable performance, but this superiority typically depends on using massive examples for supervised learning, whereas training a deep neural…

Signal Processing · Electrical Eng. & Systems 2023-11-15 Weidong Wang , Hongshu Liao , Lu Gan

A key requirement for the success of supervised deep learning is a large labeled dataset - a condition that is difficult to meet in medical image analysis. Self-supervised learning (SSL) can help in this regard by providing a strategy to…

Computer Vision and Pattern Recognition · Computer Science 2020-11-02 Krishna Chaitanya , Ertunc Erdil , Neerav Karani , Ender Konukoglu

Analyzing electroencephalographic (EEG) time series can be challenging, especially with deep neural networks, due to the large variability among human subjects and often small datasets. To address these challenges, various strategies, such…

Machine Learning · Computer Science 2025-09-18 Niklas Grieger , Siamak Mehrkanoon , Stephan Bialonski

Decoding information from bio-signals such as EEG, using machine learning has been a challenge due to the small data-sets and difficulty to obtain labels. We propose a reconstruction-based self-supervised learning model, the masked…

Signal Processing · Electrical Eng. & Systems 2022-11-07 Hsiang-Yun Sherry Chien , Hanlin Goh , Christopher M. Sandino , Joseph Y. Cheng

Self-supervised learning has gained popularity because of its ability to avoid the cost of annotating large-scale datasets. It is capable of adopting self-defined pseudo labels as supervision and use the learned representations for several…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Ashish Jaiswal , Ashwin Ramesh Babu , Mohammad Zaki Zadeh , Debapriya Banerjee , Fillia Makedon

Semi-supervised learning (SSL) has proven to be effective at leveraging large-scale unlabeled data to mitigate the dependency on labeled data in order to learn better models for visual recognition and classification tasks. However, recent…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Hasib Zunair , Yan Gobeil , Samuel Mercier , A. Ben Hamza

Self-supervised learning (SSL) is a machine learning approach where the data itself provides supervision, eliminating the need for external labels. The model is forced to learn about the data structure or context by solving a pretext task.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Markus Marks , Manuel Knott , Neehar Kondapaneni , Elijah Cole , Thijs Defraeye , Fernando Perez-Cruz , Pietro Perona

Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

We exploit a self-supervised deep multi-task learning framework for electrocardiogram (ECG) -based emotion recognition. The proposed solution consists of two stages of learning a) learning ECG representations and b) learning to classify…

Signal Processing · Electrical Eng. & Systems 2020-08-11 Pritam Sarkar , Ali Etemad

Self-supervised representation learning can mitigate the limitations in recognition tasks with few manually labeled data but abundant unlabeled data---a common scenario in sound event research. In this work, we explore unsupervised…

Sound · Computer Science 2020-11-17 Eduardo Fonseca , Diego Ortego , Kevin McGuinness , Noel E. O'Connor , Xavier Serra

Contrastive learning (CL) has recently emerged as an alternative to traditional supervised machine learning solutions by enabling rich representations from unstructured and unlabeled data. However, CL and, more broadly, self-supervised…

Machine Learning · Computer Science 2025-07-10 Roberto Pereira , Fernanda Famá , Asal Rangrazi , Marco Miozzo , Charalampos Kalalas , Paolo Dini