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Graph anomaly detection (GAD), which aims to identify unusual graph instances (nodes, edges, subgraphs, or graphs), has attracted increasing attention in recent years due to its significance in a wide range of applications. Deep learning…

机器学习 · 计算机科学 2025-06-19 Hezhe Qiao , Hanghang Tong , Bo An , Irwin King , Charu Aggarwal , Guansong Pang

Generative Adversarial Network (GAN) and its variants have recently attracted intensive research interests due to their elegant theoretical foundation and excellent empirical performance as generative models. These tools provide a promising…

机器学习 · 计算机科学 2018-02-20 Liyang Xie , Kaixiang Lin , Shu Wang , Fei Wang , Jiayu Zhou

In this paper, an image recognition algorithm based on the combination of deep learning and generative adversarial network (GAN) is studied, and compared with traditional image recognition methods. The purpose of this study is to evaluate…

计算机视觉与模式识别 · 计算机科学 2024-08-08 Yihao Zhong , Yijing Wei , Yingbin Liang , Xiqing Liu , Rongwei Ji , Yiru Cang

Generative Adversarial Networks (GANs) have been shown to produce realistically looking synthetic images with remarkable success, yet their performance seems less impressive when the training set is highly diverse. In order to provide a…

机器学习 · 计算机科学 2018-08-31 Matan Ben-Yosef , Daphna Weinshall

Despite recent advancements in out-of-distribution (OOD) detection, most current studies assume a class-balanced in-distribution training dataset, which is rarely the case in real-world scenarios. This paper addresses the challenging task…

机器学习 · 计算机科学 2023-12-15 Tong Wei , Bo-Lin Wang , Min-Ling Zhang

By design, discriminatively trained neural network classifiers produce reliable predictions only for in-distribution samples. For their real-world deployments, detecting out-of-distribution (OOD) samples is essential. Assuming OOD to be…

机器学习 · 计算机科学 2019-10-11 Sachin Vernekar , Ashish Gaurav , Vahdat Abdelzad , Taylor Denouden , Rick Salay , Krzysztof Czarnecki

Graph neural networks (GNNs) have achieved impressive performance when testing and training graph data come from identical distribution. However, existing GNNs lack out-of-distribution generalization abilities so that their performance…

机器学习 · 计算机科学 2021-12-15 Haoyang Li , Xin Wang , Ziwei Zhang , Wenwu Zhu

Generative adversarial network (GAN) is widely used for generalized and robust learning on graph data. However, for non-Euclidean graph data, the existing GAN-based graph representation methods generate negative samples by random walk or…

机器学习 · 计算机科学 2022-03-04 Jianxin Li , Xingcheng Fu , Qingyun Sun , Cheng Ji , Jiajun Tan , Jia Wu , Hao Peng

Despite the remarkable empirical successes of Generative Adversarial Networks (GANs), the theoretical guarantees for their statistical accuracy remain rather pessimistic. In particular, the data distributions on which GANs are applied, such…

机器学习 · 统计学 2025-07-17 Saptarshi Chakraborty , Peter L. Bartlett

The recent deep generative models for static graphs that are now being actively developed have achieved significant success in areas such as molecule design. However, many real-world problems involve temporal graphs whose topology and…

机器学习 · 计算机科学 2021-03-09 Liming Zhang , Liang Zhao , Shan Qin , Dieter Pfoser

Finding anomalous snapshots from a graph has garnered huge attention recently. Existing studies address the problem using shallow learning mechanisms such as subspace selection, ego-network, or community analysis. These models do not take…

机器学习 · 计算机科学 2021-06-30 Siddharth Bhatia , Yiwei Wang , Bryan Hooi , Tanmoy Chakraborty

This work studies training generative adversarial networks under the federated learning setting. Generative adversarial networks (GANs) have achieved advancement in various real-world applications, such as image editing, style transfer,…

机器学习 · 计算机科学 2020-07-21 Chenyou Fan , Ping Liu

Graph anomaly detection (GAD) has attracted increasing attention in machine learning and data mining. Recent works have mainly focused on how to capture richer information to improve the quality of node embeddings for GAD. Despite their…

机器学习 · 计算机科学 2023-10-03 Jingcan Duan , Pei Zhang , Siwei Wang , Jingtao Hu , Hu Jin , Jiaxin Zhang , Haifang Zhou , Xinwang Liu

Generative adversial network (GAN) is a type of generative model that maps a high-dimensional noise to samples in target distribution. However, the dimension of noise required in GAN is not well understood. Previous approaches view GAN as a…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Ziran Zhu , Tongda Xu , Ling Li , Yan Wang

In this study, a new Anomaly Detection (AD) approach for industrial and medical images is proposed. This method leverages the theoretical strengths of unsupervised learning and the data availability of both normal and abnormal classes.…

计算机视觉与模式识别 · 计算机科学 2024-01-24 Arnaud Bougaham , Valentin Delchevalerie , Mohammed El Adoui , Benoît Frénay

Generative Adversarial Networks (GANs) are a class of generative models used for various applications, but they have been known to suffer from the mode collapse problem, in which some modes of the target distribution are ignored by the…

计算机视觉与模式识别 · 计算机科学 2021-12-30 Karttikeya Mangalam , Rohin Garg

Generative adversarial networks (GANs) have recently become a popular data augmentation technique used by machine learning practitioners. However, they have been shown to suffer from the so-called mode collapse failure mode, which makes…

机器学习 · 计算机科学 2023-08-29 Denis Liu

Generalist Anomaly Detection (GAD) aims to train a unified model on an original domain that can detect anomalies in new target domains. Previous GAD methods primarily use only normal samples as references, overlooking the valuable…

计算机视觉与模式识别 · 计算机科学 2025-10-20 Yuexin Wang , Xiaolei Wang , Yizheng Gong , Jimin Xiao

In topology optimization using deep learning, load and boundary conditions represented as vectors or sparse matrices often miss the opportunity to encode a rich view of the design problem, leading to less than ideal generalization results.…

计算工程、金融与科学 · 计算机科学 2020-03-12 Zhenguo Nie , Tong Lin , Haoliang Jiang , Levent Burak Kara

Outlier detection is an important topic in machine learning and has been used in a wide range of applications. In this paper, we approach outlier detection as a binary-classification issue by sampling potential outliers from a uniform…

机器学习 · 计算机科学 2019-03-19 Yezheng Liu , Zhe Li , Chong Zhou , Yuanchun Jiang , Jianshan Sun , Meng Wang , Xiangnan He