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Most time series foundation models are pretrained by directly predicting future observations, which often yields weakly structured latent representations that capture surface noise rather than coherent and predictable temporal dynamics. In…

Machine Learning · Computer Science 2026-02-17 Xinxing Zhou , Qingren Yao , Yiji Zhao , Chenghao Liu , Flora Salim , Xiaojie Yuan , Yanlong Wen , Ming Jin

Recent contrastive methods show significant improvement in self-supervised learning in several domains. In particular, contrastive methods are most effective where data augmentation can be easily constructed e.g. in computer vision.…

Machine Learning · Computer Science 2021-12-09 Konstantinos Kallidromitis , Denis Gudovskiy , Kazuki Kozuka , Iku Ohama , Luca Rigazio

Developing computational pathology models is essential for reducing manual tissue typing from whole slide images, transferring knowledge from the source domain to an unlabeled, shifted target domain, and identifying unseen categories. We…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Guillaume Vray , Devavrat Tomar , Jean-Philippe Thiran , Behzad Bozorgtabar

In this work, we investigate unsupervised representation learning on medical time series, which bears the promise of leveraging copious amounts of existing unlabeled data in order to eventually assist clinical decision making. By evaluating…

Machine Learning · Computer Science 2018-12-04 Xinrui Lyu , Matthias Hueser , Stephanie L. Hyland , George Zerveas , Gunnar Raetsch

Self-supervised pretraining (SSP) has been recognized as a method to enhance prediction accuracy in various downstream tasks. However, its efficacy for DNA sequences remains somewhat constrained. This limitation stems primarily from the…

Machine Learning · Computer Science 2024-05-15 Tong Yu , Lei Cheng , Ruslan Khalitov , Erland Brandser Olsson , Zhirong Yang

Recent contrastive learning methods achieved state-of-the-art in low label regimes. However, the training requires large batch sizes and heavy augmentations to create multiple views of an image. With non-contrastive methods, the negatives…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Taha Emre , Arunava Chakravarty , Antoine Rivail , Sophie Riedl , Ursula Schmidt-Erfurth , Hrvoje Bogunović

For the advancements of time series classification, scrutinizing previous studies, most existing methods adopt a common learning-to-classify paradigm - a time series classifier model tries to learn the relation between sequence inputs and…

Machine Learning · Computer Science 2024-03-20 Mingyue Cheng , Yiheng Chen , Qi Liu , Zhiding Liu , Yucong Luo

Limited availability of labeled physiological data often prohibits the use of powerful supervised deep learning models in the biomedical machine intelligence domain. We approach this problem and propose a novel encoding framework that…

Machine Learning · Computer Science 2023-06-13 Philipp Hallgarten , David Bethge , Ozan Özdenizci , Tobias Grosse-Puppendahl , Enkelejda Kasneci

Foundation models pre-trained on large-scale source datasets are reshaping the traditional training paradigm for time series classification. However, existing time series foundation models primarily focus on forecasting tasks and often…

Machine Learning · Computer Science 2026-01-13 Zhen Liu , Yucheng Wang , Boyuan Li , Junhao Zheng , Emadeldeen Eldele , Min Wu , Qianli Ma

The task of dataset distillation aims to find a small set of synthetic images such that training a model on them reproduces the performance of the same model trained on a much larger dataset of real samples. Existing distillation methods…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 George Cazenavette , Antonio Torralba , Vincent Sitzmann

Self-supervised learning has garnered increasing attention in time series analysis for benefiting various downstream tasks and reducing reliance on labeled data. Despite its effectiveness, existing methods often struggle to comprehensively…

Machine Learning · Computer Science 2025-06-12 Daoyu Wang , Mingyue Cheng , Zhiding Liu , Qi Liu

Nowadays, the majority of state of the art monocular depth estimation techniques are based on supervised deep learning models. However, collecting RGB images with associated depth maps is a very time consuming procedure. Therefore, recent…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Andrea Pilzer , Stéphane Lathuilière , Nicu Sebe , Elisa Ricci

While unsupervised change detection using contrastive learning has been significantly improved the performance of literature techniques, at present, it only focuses on the bi-temporal change detection scenario. Previous state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Yuxing Chen , Lorenzo Bruzzone

The ubiquity of time series data creates a strong demand for general-purpose foundation models, yet developing them for classification remains a significant challenge, largely due to the high cost of labeled data. Foundation models capable…

Machine Learning · Computer Science 2025-11-27 Chin-Chia Michael Yeh , Uday Singh Saini , Junpeng Wang , Xin Dai , Xiran Fan , Jiarui Sun , Yujie Fan , Yan Zheng

Recent breakthroughs in natural language processing and computer vision, driven by efficient pre-training on large datasets, have enabled foundation models to excel on a wide range of tasks. However, this potential has not yet been fully…

Machine Learning · Computer Science 2025-02-03 Özgün Turgut , Philip Müller , Martin J. Menten , Daniel Rueckert

Test-time adaptation aims to adapt pre-trained deep neural networks using solely online unlabelled test data during inference. Although TTA has shown promise in visual applications, its potential in time series contexts remains largely…

Machine Learning · Computer Science 2025-01-06 Peiliang Gong , Mohamed Ragab , Min Wu , Zhenghua Chen , Yongyi Su , Xiaoli Li , Daoqiang Zhang

Unsupervised representation learning approaches aim to learn discriminative feature representations from unlabeled data, without the requirement of annotating every sample. Enabling unsupervised representation learning is extremely crucial…

Machine Learning · Computer Science 2023-08-04 Qianwen Meng , Hangwei Qian , Yong Liu , Yonghui Xu , Zhiqi Shen , Lizhen Cui

Considering the abundance of unlabeled speech data and the high labeling costs, unsupervised learning methods can be essential for better system development. One of the most successful methods is contrastive self-supervised methods, which…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-11 Jaejin Cho , Raghavendra Pappagari , Piotr Żelasko , Laureano Moro-Velazquez , Jesús Villalba , Najim Dehak

The present study explores the interpretability of latent spaces produced by time series foundation models, focusing on their potential for visual analysis tasks. Specifically, we evaluate the MOMENT family of models, a set of…

Self-supervision is one of the hallmarks of representation learning in the increasingly popular suite of foundation models including large language models such as BERT and GPT-3, but it has not been pursued in the context of multivariate…

Machine Learning · Computer Science 2024-02-05 Xiao Shou , Dharmashankar Subramanian , Debarun Bhattacharjya , Tian Gao , Kristin P. Bennet