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Graph contrastive learning (GCL) has emerged as a pivotal technique in the domain of graph representation learning. A crucial aspect of effective GCL is the caliber of generated positive and negative samples, which is intrinsically dictated…

机器学习 · 计算机科学 2024-02-19 Xinjian Zhao , Liang Zhang , Yang Liu , Ruocheng Guo , Xiangyu Zhao

Training data for class-conditional image synthesis often exhibit a long-tailed distribution with limited images for tail classes. Such an imbalance causes mode collapse and reduces the diversity of synthesized images for tail classes. For…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Fang Chen , Alex Villa , Gongbo Liang , Xiaoyi Lu , Meng Tang

In this paper, we address Novel Class Discovery (NCD), the task of unveiling new classes in a set of unlabeled samples given a labeled dataset with known classes. We exploit the peculiarities of NCD to build a new framework, named…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Zhun Zhong , Enrico Fini , Subhankar Roy , Zhiming Luo , Elisa Ricci , Nicu Sebe

Graph-based collaborative filtering has been established as a prominent approach in recommendation systems, leveraging the inherent graph topology of user-item interactions to model high-order connectivity patterns and enhance…

信息检索 · 计算机科学 2025-03-21 Fan Huang , Wei Wang

Domain generalization approaches aim to learn a domain invariant prediction model for unknown target domains from multiple training source domains with different distributions. Significant efforts have recently been committed to broad…

计算机视觉与模式识别 · 计算机科学 2021-08-23 Mohammad Mahfujur Rahman , Clinton Fookes , Sridha Sridharan

This study delves into the application of Generative Adversarial Networks (GANs) within the context of imbalanced datasets. Our primary aim is to enhance the performance and stability of GANs in such datasets. In pursuit of this objective,…

机器学习 · 计算机科学 2023-12-11 Ali Anaissi , Yuanzhe Jia , Ali Braytee , Mohamad Naji , Widad Alyassine

Contrastive learning is among the most successful methods for visual representation learning, and its performance can be further improved by jointly performing clustering on the learned representations. However, existing methods for joint…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Shunjie-Fabian Zheng , JaeEun Nam , Emilio Dorigatti , Bernd Bischl , Shekoofeh Azizi , Mina Rezaei

Domain generalization aims to learn knowledge invariant across different distributions while semantically meaningful for downstream tasks from multiple source domains, to improve the model's generalization ability on unseen target domains.…

机器学习 · 计算机科学 2021-06-03 Yunqi Wang , Furui Liu , Zhitang Chen , Qing Lian , Shoubo Hu , Jianye Hao , Yik-Chung Wu

Deep neural networks have been widely studied in autonomous driving applications such as semantic segmentation or depth estimation. However, training a neural network in a supervised manner requires a large amount of annotated labels which…

计算机视觉与模式识别 · 计算机科学 2021-03-11 Dongseok Shim , H. Jin Kim

Deep neural networks (DNNs) often struggle with out-of-distribution data, limiting their reliability in diverse realworld applications. To address this issue, domain generalization methods have been developed to learn domain-invariant…

计算机视觉与模式识别 · 计算机科学 2025-03-24 Jiaxi Li , Di Lin , Hao Chen , Hongying Liu , Liang Wan , Wei Feng

Domain generalization on graphs aims to develop models with robust generalization capabilities, ensuring effective performance on the testing set despite disparities between testing and training distributions. However, existing methods…

机器学习 · 计算机科学 2024-11-21 Qin Tian , Chen Zhao , Minglai Shao , Wenjun Wang , Yujie Lin , Dong Li

In recent years, deep dictionary learning (DDL)has attracted a great amount of attention due to its effectiveness for representation learning and visual recognition.~However, most existing methods focus on unsupervised deep dictionary…

机器学习 · 计算机科学 2022-07-15 Xia Yuan , Jianping Gou , Baosheng Yu , Jiali Yu , Zhang Yi

Generalized Category Discovery (GCD) tackles the challenging problem of categorizing unlabeled images into both known and novel classes within a partially labeled dataset, without prior knowledge of the number of unknown categories.…

计算机视觉与模式识别 · 计算机科学 2025-07-03 Mingfu Yan , Jiancheng Huang , Yifan Liu , Shifeng Chen

Deep neural networks suffer from catastrophic forgetting when continually learning new concepts. In this paper, we analyze this problem from a data imbalance point of view. We argue that the imbalance between old task and new task data…

计算机视觉与模式识别 · 计算机科学 2024-05-27 Leyuan Wang , Liuyu Xiang , Yunlong Wang , Huijia Wu , Zhaofeng He

The objective of domain generalization (DG) is to enable models to be robust against domain shift. DG is crucial for deploying vision-language models (VLMs) in real-world applications, yet most existing methods rely on domain labels that…

机器学习 · 计算机科学 2026-02-02 Zhixing Li , Arsham Gholamzadeh Khoee , Yinan Yu

Unsupervised domain adaptation (UDA) aims to transfer knowledge learned from a fully-labeled source domain to a different unlabeled target domain. Most existing UDA methods learn domain-invariant feature representations by minimizing…

计算机视觉与模式识别 · 计算机科学 2022-05-10 Rui Wang , Zuxuan Wu , Zejia Weng , Jingjing Chen , Guo-Jun Qi , Yu-Gang Jiang

Integrating supervised contrastive loss to cross entropy-based communication has recently been proposed as a solution to address the long-tail learning problem. However, when the class imbalance ratio is high, it requires adjusting the…

机器学习 · 计算机科学 2024-07-10 Charika De Alvis , Dishanika Denipitiyage , Suranga Seneviratne

Contrastive learning has gained widespread adoption for retrieval tasks due to its minimal requirement for manual annotations. However, popular training frameworks typically learn from binary (positive/negative) relevance, making them…

信息检索 · 计算机科学 2025-04-29 Tianyu Zhu , Myong Chol Jung , Jesse Clark

Contrastive learning, a dominant self-supervised technique, emphasizes similarity in representations between augmentations of the same input and dissimilarity for different ones. Although low contrastive loss often correlates with high…

机器学习 · 计算机科学 2023-11-22 Yunzhe Zhang , Yao Lu , Qi Xuan

Identifying influential nodes in complex networks is a fundamental task in network analysis with wide-ranging applications across domains. While deep learning has advanced node influence detection, existing supervised approaches remain…

社会与信息网络 · 计算机科学 2025-09-04 Yanmei Hu , Yihang Wu , Bing Sun , Xue Yue , Biao Cai , Xiangtao Li , Yang Chen