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Efficiently capturing the complex spatiotemporal representations from large-scale unlabeled traffic data remains to be a challenging task. In considering of the dilemma, this work employs the advanced contrastive learning and proposes a…

机器学习 · 计算机科学 2023-12-19 Lincan Li , Kaixiang Yang , Fengji Luo , Jichao Bi

Contrastive learning is a family of self-supervised methods where a model is trained to solve a classification task constructed from unlabeled data. It has recently emerged as one of the leading learning paradigms in the absence of labels…

机器学习 · 统计学 2021-03-05 Bingbin Liu , Pradeep Ravikumar , Andrej Risteski

Contrastive learning (CL) is a popular technique for self-supervised learning (SSL) of visual representations. It uses pairs of augmentations of unlabeled training examples to define a classification task for pretext learning of a deep…

计算机视觉与模式识别 · 计算机科学 2020-10-26 Chih-Hui Ho , Nuno Vasconcelos

Learning rich visual representations using contrastive self-supervised learning has been extremely successful. However, it is still a major question whether we could use a similar approach to learn superior auditory representations. In this…

声音 · 计算机科学 2020-10-20 Haider Al-Tahan , Yalda Mohsenzadeh

Time series forecasting (TSF) holds significant importance in modern society, spanning numerous domains. Previous representation learning-based TSF algorithms typically embrace a contrastive learning paradigm featuring segregated…

机器学习 · 计算机科学 2023-12-12 Jiaxin Gao , Yuxiao Hu , Qinglong Cao , Siqi Dai , Yuntian Chen

Contrastive self-supervised learning (CSL) has attracted increasing attention for model pre-training via unlabeled data. The resulted CSL models provide instance-discriminative visual features that are uniformly scattered in the feature…

计算机视觉与模式识别 · 计算机科学 2021-10-15 Yifan Zhang , Bryan Hooi , Dapeng Hu , Jian Liang , Jiashi Feng

Most Neural Networks (NNs) for classification are trained using Cross-Entropy as a loss function. This approach requires the model to have an explicit classification layer. However, there exist alternative approaches, such as Contrastive…

机器学习 · 计算机科学 2026-04-27 Leonardo Arrighi , Julia Eva Belloni , Aurélie Gallet , Ivan Gentile , Matteo Lippi , Marco Zullich

Time-series analysis plays a pivotal role across a range of critical applications, from finance to healthcare, which involves various tasks, such as forecasting and classification. To handle the inherent complexities of time-series data,…

机器学习 · 计算机科学 2024-05-20 Jiawei Li , Jingshu Peng , Haoyang Li , Lei Chen

Multi-modal contrastive learning (MMCL) has recently garnered considerable interest due to its superior performance in visual tasks, achieved by embedding multi-modal data, such as visual-language pairs. However, there still lack…

计算机视觉与模式识别 · 计算机科学 2023-06-08 Qi Zhang , Yifei Wang , Yisen Wang

Foundation models have recently gained attention within the field of machine learning thanks to its efficiency in broad data processing. While researchers had attempted to extend this success to time series models, the main challenge is…

机器学习 · 计算机科学 2023-11-22 Trang H. Tran , Lam M. Nguyen , Kyongmin Yeo , Nam Nguyen , Roman Vaculin

Recently the deep learning has shown its advantage in representation learning and clustering for time series data. Despite the considerable progress, the existing deep time series clustering approaches mostly seek to train the deep neural…

机器学习 · 计算机科学 2023-01-02 Ying Zhong , Dong Huang , Chang-Dong Wang

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

机器学习 · 计算机科学 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Supervised Causal Learning (SCL) has shown promise in causal discovery by framing it as a supervised learning problem. However, it suffers from significant out-of-distribution generalization challenges. We reveal three limitations of…

机器学习 · 计算机科学 2026-05-29 Zizhen Deng , Jiaru Zhang , Rui Ding , Huang Bojun , Jinzhuo Wang , Qiang Fu , Shi Han , Dongmei Zhang

Recent work has shown that, when integrated with adversarial training, self-supervised pre-training can lead to state-of-the-art robustness In this work, we improve robustness-aware self-supervised pre-training by learning representations…

计算机视觉与模式识别 · 计算机科学 2020-10-27 Ziyu Jiang , Tianlong Chen , Ting Chen , Zhangyang Wang

Self-supervised learning has recently achieved great success in representation learning without human annotations. The dominant method -- that is contrastive learning, is generally based on instance discrimination tasks, i.e., individual…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Chen Feng , Ioannis Patras

Recently, pretext-task based methods are proposed one after another in self-supervised video feature learning. Meanwhile, contrastive learning methods also yield good performance. Usually, new methods can beat previous ones as claimed that…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Li Tao , Xueting Wang , Toshihiko Yamasaki

Spatio-temporal forecasting is essential for real-world applications such as traffic management and urban computing. Although recent methods have shown improved accuracy, they often fail to account for dynamic deviations between current…

机器学习 · 计算机科学 2025-10-07 Haotian Gao , Zheng Dong , Jiawei Yong , Shintaro Fukushima , Kenjiro Taura , Renhe Jiang

Contrastive learning (CL) has emerged as a promising approach for representation learning in time series data by embedding similar pairs closely while distancing dissimilar ones. However, existing CL methods often introduce false negative…

机器学习 · 计算机科学 2024-10-15 Yu Wu , Ting Dang , Dimitris Spathis , Hong Jia , Cecilia Mascolo

In this work, we investigate the time series representation learning problem using self-supervised techniques. Contrastive learning is well-known in this area as it is a powerful method for extracting information from the series and…

机器学习 · 计算机科学 2024-10-08 Duy A. Nguyen , Trang H. Tran , Huy Hieu Pham , Phi Le Nguyen , Lam M. Nguyen

Contrastive learning has emerged as an essential approach for self-supervised learning in visual representation learning. The central objective of contrastive learning is to maximize the similarities between two augmented versions of an…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Hengkui Dong , Xianzhong Long , Yun Li , Lei Chen