English
Related papers

Related papers: Unsupervised Representation Learning for Time Seri…

200 papers

In principle, meta-reinforcement learning algorithms leverage experience across many tasks to learn fast reinforcement learning (RL) strategies that transfer to similar tasks. However, current meta-RL approaches rely on manually-defined…

Artificial Intelligence · Computer Science 2019-12-10 Allan Jabri , Kyle Hsu , Ben Eysenbach , Abhishek Gupta , Sergey Levine , Chelsea Finn

This paper presents two unsupervised learning layers (UL layers) for label-free video analysis: one for fully connected layers, and the other for convolutional ones. The proposed UL layers can play two roles: they can be the cost function…

Machine Learning · Computer Science 2017-05-26 Liang Zhao , Yang Wang , Yi Yang , Wei Xu

The goal of the unsupervised learning of disentangled representations is to separate the independent explanatory factors of variation in the data without access to supervision. In this paper, we summarize the results of Locatello et al.,…

Machine Learning · Computer Science 2020-07-29 Francesco Locatello , Stefan Bauer , Mario Lucic , Gunnar Rätsch , Sylvain Gelly , Bernhard Schölkopf , Olivier Bachem

Few-shot learning aims to learn a new concept when only a few training examples are available, which has been extensively explored in recent years. However, most of the current works heavily rely on a large-scale labeled auxiliary set to…

Computer Vision and Pattern Recognition · Computer Science 2020-09-18 Tiexin Qin , Wenbin Li , Yinghuan Shi , Yang Gao

Continual learning aims to learn new tasks incrementally using less computation and memory resources instead of retraining the model from scratch whenever new task arrives. However, existing approaches are designed in supervised fashion…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Jiangpeng He , Fengqing Zhu

In this work, we evaluate the effectiveness of representation learning approaches for decision making in visually complex environments. Representation learning is essential for effective reinforcement learning (RL) from high-dimensional…

Machine Learning · Computer Science 2022-04-26 Jun Yamada , Karl Pertsch , Anisha Gunjal , Joseph J. Lim

In computational pathology, deep learning (DL) models for tasks such as segmentation or tissue classification are known to suffer from domain shifts due to different staining techniques. Stain adaptation aims to reduce the generalization…

Image and Video Processing · Electrical Eng. & Systems 2024-07-04 Daniel Reisenbüchler , Lucas Luttner , Nadine S. Schaadt , Friedrich Feuerhake , Dorit Merhof

Time series classification (TSC) is an important task in time series analysis. Existing TSC methods mainly train on each single domain separately, suffering from a degradation in accuracy when the samples for training are insufficient in…

Machine Learning · Computer Science 2025-04-15 Yuxuan Chen , Shanshan Huang , Yunyao Cheng , Peng Chen , Zhongwen Rao , Yang Shu , Bin Yang , Lujia Pan , Chenjuan Guo

Learning features from massive unlabelled data is a vast prevalent topic for high-level tasks in many machine learning applications. The recent great improvements on benchmark data sets achieved by increasingly complex unsupervised learning…

Neural and Evolutionary Computing · Computer Science 2015-09-29 Wentao Zhu , Jun Miao , Laiyun Qing , Xilin Chen

In many real-world application, e.g., speech recognition or sleep stage classification, data are captured over the course of time, constituting a Time-Series. Time-Series often contain temporal dependencies that cause two otherwise…

Machine Learning · Computer Science 2017-01-10 John Cristian Borges Gamboa

Learning from fully-unlabeled data is challenging in Multimedia Forensics problems, such as Person Re-Identification and Text Authorship Attribution. Recent self-supervised learning methods have shown to be effective when dealing with…

Computer Vision and Pattern Recognition · Computer Science 2023-07-03 Gabriel Bertocco , Antônio Theophilo , Fernanda Andaló , Anderson Rocha

Pre-trained Language Models (PLMs), such as ChatGPT, have significantly advanced the field of natural language processing. This progress has inspired a series of innovative studies that explore the adaptation of PLMs to time series…

Artificial Intelligence · Computer Science 2025-06-06 Weijia Zhang , Chenlong Yin , Hao Liu , Hui Xiong

This review addresses the problem of learning abstract representations of the measurement data in the context of Deep Reinforcement Learning (DRL). While the data are often ambiguous, high-dimensional, and complex to interpret, many…

Machine Learning · Computer Science 2024-05-31 Nicolò Botteghi , Mannes Poel , Christoph Brune

Multivariate time-series data in numerous real-world applications (e.g., healthcare and industry) are informative but challenging due to the lack of labels and high dimensionality. Recent studies in self-supervised learning have shown their…

Machine Learning · Computer Science 2024-07-18 Ching Chang , Chiao-Tung Chan , Wei-Yao Wang , Wen-Chih Peng , Tien-Fu Chen

Although deep networks have significantly increased the performance of visual recognition methods, it is still challenging to achieve the robustness across visual domains that is necessary for real-world applications. To tackle this issue,…

Computer Vision and Pattern Recognition · Computer Science 2019-10-14 Antonio D'Innocente , Silvia Bucci , Barbara Caputo , Tatiana Tommasi

Recently, unsupervised representation learning (URL) has improved the sample efficiency of Reinforcement Learning (RL) by pretraining a model from a large unlabeled dataset. The underlying principle of these methods is to learn temporally…

Machine Learning · Computer Science 2023-06-12 Hojoon Lee , Koanho Lee , Dongyoon Hwang , Hyunho Lee , Byungkun Lee , Jaegul Choo

Unsupervised pre-training has shown great success in skeleton-based action understanding recently. Existing works typically train separate modality-specific models, then integrate the multi-modal information for action understanding by a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Shengkai Sun , Daizong Liu , Jianfeng Dong , Xiaoye Qu , Junyu Gao , Xun Yang , Xun Wang , Meng Wang

Unsupervised learning methods for feature extraction are becoming more and more popular. We combine the popular contrastive learning method (prototypical contrastive learning) and the classic representation learning method (autoencoder) to…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Zeyu Cao , Xiaorun Li , Liaoying Zhao

Unsupervised visual representation learning remains a largely unsolved problem in computer vision research. Among a big body of recently proposed approaches for unsupervised learning of visual representations, a class of self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2019-01-28 Alexander Kolesnikov , Xiaohua Zhai , Lucas Beyer

Self-supervised learning allows for better utilization of unlabelled data. The feature representation obtained by self-supervision can be used in downstream tasks such as classification, object detection, segmentation, and anomaly…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Rabia Ali , Muhammad Umar Karim Khan , Chong Min Kyung