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Dynamic graph modeling has recently attracted much attention due to its extensive applications in many real-world scenarios, such as recommendation systems, financial transactions, and social networks. Although many works have been proposed…

Machine Learning · Computer Science 2021-05-18 Lu Wang , Xiaofu Chang , Shuang Li , Yunfei Chu , Hui Li , Wei Zhang , Xiaofeng He , Le Song , Jingren Zhou , Hongxia Yang

Robust frame-wise embeddings are essential to perform video analysis and understanding tasks. We present a self-supervised method for representation learning based on aligning temporal video sequences. Our framework uses a transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Keyne Oei , Amr Gomaa , Anna Maria Feit , João Belo

Spatial-temporal graph learning has emerged as a promising solution for modeling structured spatial-temporal data and learning region representations for various urban sensing tasks such as crime forecasting and traffic flow prediction.…

Machine Learning · Computer Science 2023-06-21 Qianru Zhang , Chao Huang , Lianghao Xia , Zheng Wang , Siuming Yiu , Ruihua Han

Temporal Graph Learning (TGL) is crucial for capturing the evolving nature of stock markets. Traditional methods often ignore the interplay between dynamic temporal changes and static relational structures between stocks. To address this…

Machine Learning · Computer Science 2025-03-04 Yunhua Pei , Jin Zheng , John Cartlidge

Leveraging temporal information has been regarded as essential for developing video understanding models. However, how to properly incorporate temporal information into the recent successful instance discrimination based contrastive…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Yutong Bai , Haoqi Fan , Ishan Misra , Ganesh Venkatesh , Yongyi Lu , Yuyin Zhou , Qihang Yu , Vikas Chandra , Alan Yuille

Graph contrastive learning (GCL) alleviates the heavy reliance on label information for graph representation learning (GRL) via self-supervised learning schemes. The core idea is to learn by maximising mutual information for similar…

Machine Learning · Computer Science 2022-10-18 Yizhen Zheng , Shirui Pan , Vincent Cs Lee , Yu Zheng , Philip S. Yu

Graph representation learning (GRL) makes considerable progress recently, which encodes graphs with topological structures into low-dimensional embeddings. Meanwhile, the time-consuming and costly process of annotating graph labels manually…

Machine Learning · Computer Science 2024-02-28 Haojun Jiang , Jiawei Sun , Jie Li , Chentao Wu

We study self-supervised learning on graphs using contrastive methods. A general scheme of prior methods is to optimize two-view representations of input graphs. In many studies, a single graph-level representation is computed as one of the…

Machine Learning · Computer Science 2021-07-22 Xinyi Xu , Cheng Deng , Yaochen Xie , Shuiwang Ji

In this paper, we present a new cross-architecture contrastive learning (CACL) framework for self-supervised video representation learning. CACL consists of a 3D CNN and a video transformer which are used in parallel to generate diverse…

Computer Vision and Pattern Recognition · Computer Science 2022-05-27 Sheng Guo , Zihua Xiong , Yujie Zhong , Limin Wang , Xiaobo Guo , Bing Han , Weilin Huang

Modern self-supervised learning algorithms typically enforce persistency of instance representations across views. While being very effective on learning holistic image and video representations, such an objective becomes sub-optimal for…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Liangzhe Yuan , Rui Qian , Yin Cui , Boqing Gong , Florian Schroff , Ming-Hsuan Yang , Hartwig Adam , Ting Liu

Contrastive learning has been widely applied to graph representation learning, where the view generators play a vital role in generating effective contrastive samples. Most of the existing contrastive learning methods employ pre-defined…

Machine Learning · Computer Science 2022-01-04 Yihang Yin , Qingzhong Wang , Siyu Huang , Haoyi Xiong , Xiang Zhang

Biologically inspired spiking neural networks (SNNs) have garnered considerable attention due to their low-energy consumption and spatio-temporal information processing capabilities. Most existing SNNs training methods first integrate…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Haonan Qiu , Zeyin Song , Yanqi Chen , Munan Ning , Wei Fang , Tao Sun , Zhengyu Ma , Li Yuan , Yonghong Tian

This document aims to familiarize readers with temporal graph learning (TGL) through a concept-first approach. We have systematically presented vital concepts essential for understanding the workings of a TGL framework. In addition to…

Machine Learning · Computer Science 2024-01-10 Aniq Ur Rahman , Justin P. Coon

Graph contrastive learning (GCL), as a popular approach to graph self-supervised learning, has recently achieved a non-negligible effect. To achieve superior performance, the majority of existing GCL methods elaborate on graph data…

Machine Learning · Computer Science 2022-05-03 Yuansheng Wang , Wangbin Sun , Kun Xu , Zulun Zhu , Liang Chen , Zibin Zheng

Temporal graph learning aims to generate high-quality representations for graph-based tasks with dynamic information, which has recently garnered increasing attention. In contrast to static graphs, temporal graphs are typically organized as…

Machine Learning · Computer Science 2024-04-30 Meng Liu , Ke Liang , Yawei Zhao , Wenxuan Tu , Sihang Zhou , Xinbiao Gan , Xinwang Liu , Kunlun He

We present Cycle-Contrastive Learning (CCL), a novel self-supervised method for learning video representation. Following a nature that there is a belong and inclusion relation of video and its frames, CCL is designed to find correspondences…

Computer Vision and Pattern Recognition · Computer Science 2020-10-29 Quan Kong , Wenpeng Wei , Ziwei Deng , Tomoaki Yoshinaga , Tomokazu Murakami

Recent advancements in Graph Contrastive Learning (GCL) have demonstrated remarkable effectiveness in improving graph representations. However, relying on predefined augmentations (e.g., node dropping, edge perturbation, attribute masking)…

Machine Learning · Computer Science 2025-02-27 Khaled Mohammed Saifuddin , Shihao Ji , Esra Akbas

This paper addresses the temporal sentence grounding (TSG). Although existing methods have made decent achievements in this task, they not only severely rely on abundant video-query paired data for training, but also easily fail into the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Daizong Liu , Xiaoye Qu , Jianfeng Dong , Pan Zhou , Zichuan Xu , Haozhao Wang , Xing Di , Weining Lu , Yu Cheng

This work presents a self-supervised learning framework named TeG to explore Temporal Granularity in learning video representations. In TeG, we sample a long clip from a video and a short clip that lies inside the long clip. We then extract…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Rui Qian , Yeqing Li , Liangzhe Yuan , Boqing Gong , Ting Liu , Matthew Brown , Serge Belongie , Ming-Hsuan Yang , Hartwig Adam , Yin Cui

Generalized Category Discovery (GCD) is an emerging and challenging open-world problem that has garnered increasing attention in recent years. Most existing GCD methods focus on discovering categories in static images. However, relying…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Zhang Jing , Pu Nan , Xie Yu Xiang , Guo Yanming , Lu Qianqi , Zou Shiwei , Yan Jie , Chen Yan