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Single image super-resolution (SISR) with generative adversarial networks (GAN) has recently attracted increasing attention due to its potentials to generate rich details. However, the training of GAN is unstable, and it often introduces…

图像与视频处理 · 电气工程与系统科学 2022-04-12 Jie Liang , Hui Zeng , Lei Zhang

The aim of this paper is to propose a mechanism to efficiently and explicitly model image hierarchies in the global, regional, and local range for image restoration. To achieve that, we start by analyzing two important properties of natural…

计算机视觉与模式识别 · 计算机科学 2023-05-26 Yawei Li , Yuchen Fan , Xiaoyu Xiang , Denis Demandolx , Rakesh Ranjan , Radu Timofte , Luc Van Gool

Existing deepfake detectors face several challenges in achieving robustness and generalization. One of the primary reasons is their limited ability to extract relevant information from forgery videos, especially in the presence of various…

计算机视觉与模式识别 · 计算机科学 2023-05-01 Zhiyuan Yan , Peng Sun , Yubo Lang , Shuo Du , Shanzhuo Zhang , Wei Wang , Lei Liu

It has been well demonstrated that adversarial examples, i.e., natural images with visually imperceptible perturbations added, generally exist for deep networks to fail on image classification. In this paper, we extend adversarial examples…

计算机视觉与模式识别 · 计算机科学 2017-07-24 Cihang Xie , Jianyu Wang , Zhishuai Zhang , Yuyin Zhou , Lingxi Xie , Alan Yuille

Recent years have witnessed the remarkable progress of applying deep learning models in video person re-identification (Re-ID). A key factor for video person Re-ID is to effectively construct discriminative and robust video feature…

计算机视觉与模式识别 · 计算机科学 2020-10-28 Yiming Wu , Omar El Farouk Bourahla , Xi Li , Fei Wu , Qi Tian , Xue Zhou

Traditional point-based image editing methods rely on iterative latent optimization or geometric transformations, which are either inefficient in their processing or fail to capture the semantic relationships within the image. These methods…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Biao Yang , Muqi Huang , Yuhui Zhang , Yun Xiong , Kun Zhou , Xi Chen , Shiyang Zhou , Huishuai Bao , Chuan Li , Feng Shi , Hualei Liu

Over the past few years, graph representation learning (GRL) has been a powerful strategy for analyzing graph-structured data. Recently, GRL methods have shown promising results by adopting self-supervised learning methods developed for…

机器学习 · 计算机科学 2022-09-05 Namkyeong Lee , Dongmin Hyun , Junseok Lee , Chanyoung Park

The superiority of graph contrastive learning (GCL) has prompted its application to anomaly detection tasks for more powerful risk warning systems. Unfortunately, existing GCL-based models tend to excessively prioritize overall detection…

机器学习 · 计算机科学 2025-07-22 Yiming Xu , Zhen Peng , Bin Shi , Xu Hua , Bo Dong , Song Wang , Chen Chen

Graph Neural Networks (GNNs) have emerged as a powerful approach for graph-based machine learning tasks. Previous work applied GNNs to image-derived graph representations for various downstream tasks such as classification or anomaly…

计算机视觉与模式识别 · 计算机科学 2025-08-19 Dehn Xu , Tim Katzke , Emmanuel Müller

Fraud detection aims to discover fraudsters deceiving other users by, for example, leaving fake reviews or making abnormal transactions. Graph-based fraud detection methods consider this task as a classification problem with two classes:…

机器学习 · 计算机科学 2024-01-04 Heehyeon Kim , Jinhyeok Choi , Joyce Jiyoung Whang

Temporal graph representation learning aims to generate low-dimensional dynamic node embeddings to capture temporal information as well as structural and property information. Current representation learning methods for temporal networks…

机器学习 · 计算机科学 2023-11-08 Hongjiang Chen , Pengfei Jiao , Huijun Tang , Huaming Wu

Representation learning in dynamic graphs is a challenging problem because the topology of graph and node features vary at different time. This requires the model to be able to effectively capture both graph topology information and…

机器学习 · 计算机科学 2021-11-16 Xintao Xiang , Tiancheng Huang , Donglin Wang

Temporal Graph Learning, which aims to model the time-evolving nature of graphs, has gained increasing attention and achieved remarkable performance recently. However, in reality, graph structures are often incomplete and noisy, which…

机器学习 · 计算机科学 2023-08-16 Haozhen Zhang , Xueting Han , Xi Xiao , Jing Bai

Graph unlearning, which deletes graph elements such as nodes and edges from trained graph neural networks (GNNs), is crucial for real-world applications where graph data may contain outdated, inaccurate, or privacy-sensitive information.…

机器学习 · 计算机科学 2025-05-20 Pengfei Ding , Yan Wang , Guanfeng Liu , Jiajie Zhu

Image restoration has seen substantial progress in recent years. However, existing methods often neglect depth information, which hurts similarity matching, results in attention distractions in shallow depth-of-field (DoF) scenarios, and…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Junyi He , Liuling Chen , Hongyang Zhou , Zhang xiaoxing , Xiaobin Zhu , Shengxiang Yu , Jingyan Qin , Xu-Cheng Yin

Multi-view clustering is an important machine learning task for multi-media data, encompassing various domains such as images, videos, and texts. Moreover, with the growing abundance of graph data, the significance of multi-view graph…

机器学习 · 计算机科学 2024-10-31 Zichen Wen , Tianyi Wu , Yazhou Ren , Yawen Ling , Chenhang Cui , Xiaorong Pu , Lifang He

The rich information underlying graphs has inspired further investigation of unsupervised graph representation. Existing studies mainly depend on node features and topological properties within static graphs to create self-supervised…

机器学习 · 计算机科学 2026-05-27 Yiming Xu , Zhen Peng , Bin Shi , Xu Hua , Bo Dong

Graph Neural Networks (GNNs) have achieved great success in processing graph data by extracting and propagating structure-aware features. Existing GNN research designs various propagation schemes to guide the aggregation of neighbor…

机器学习 · 计算机科学 2021-12-03 Jun Hu , Shengsheng Qian , Quan Fang , Changsheng Xu

Domain Adaptive Object Detection (DAOD) focuses on improving the generalization ability of object detectors via knowledge transfer. Recent advances in DAOD strive to change the emphasis of the adaptation process from global to local in…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Chaoqi Chen , Jiongcheng Li , Hong-Yu Zhou , Xiaoguang Han , Yue Huang , Xinghao Ding , Yizhou Yu

Contrastive learning is an effective unsupervised method in graph representation learning. Recently, the data augmentation based contrastive learning method has been extended from images to graphs. However, most prior works are directly…

机器学习 · 计算机科学 2023-12-19 Shengyu Feng , Baoyu Jing , Yada Zhu , Hanghang Tong