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Vulnerability detection is crucial for ensuring the security and reliability of software systems. Recently, Graph Neural Networks (GNNs) have emerged as a prominent code embedding approach for vulnerability detection, owing to their ability…

软件工程 · 计算机科学 2024-07-16 Zhaoyang Chu , Yao Wan , Qian Li , Yang Wu , Hongyu Zhang , Yulei Sui , Guandong Xu , Hai Jin

In the current context of accelerated globalization and digitalization, the complexity and uncertainty of financial markets are increasing, and the identification and prevention of economic risks have become a key link in maintaining the…

统计金融 · 定量金融 2024-11-20 Xin Zhang , Zhen Xu , Yue Liu , Mengfang Sun , Tong Zhou , Wenying Sun

Small and Medium-sized Enterprises (SMEs) are vital to the modern economy, yet their credit risk analysis often struggles with scarce data, especially for online lenders lacking direct credit records. This paper introduces a Graph Neural…

机器学习 · 计算机科学 2025-07-22 Zizhou Zhang , Qinyan Shen , Zhuohuan Hu , Qianying Liu , Huijie Shen

The digital revolution has significantly impacted financial transactions, leading to a notable increase in credit card usage. However, this convenience comes with a trade-off: a substantial rise in fraudulent activities. Traditional machine…

Corporate fraud detection aims to automatically recognize companies that conduct wrongful activities such as fraudulent financial statements or illegal insider trading. Previous learning-based methods fail to effectively integrate rich…

机器学习 · 计算机科学 2025-06-02 Shiqi Wang , Zhibo Zhang , Libing Fang , Cam-Tu Nguyen , Wenzhong Li

Graph-based Neural Networks (GNNs) are recent models created for learning representations of nodes (and graphs), which have achieved promising results when detecting patterns that occur in large-scale data relating different entities. Among…

机器学习 · 计算机科学 2021-08-20 Ronald D. R. Pereira , Fabrício Murai

Structural data well exists in Web applications, such as social networks in social media, citation networks in academic websites, and threads data in online forums. Due to the complex topology, it is difficult to process and make use of the…

信息检索 · 计算机科学 2022-05-12 Juntao Tan , Shijie Geng , Zuohui Fu , Yingqiang Ge , Shuyuan Xu , Yunqi Li , Yongfeng Zhang

Credit card fraud poses a significant threat to the economy. While Graph Neural Network (GNN)-based fraud detection methods perform well, they often overlook the causal effect of a node's local structure on predictions. This paper…

机器学习 · 计算机科学 2024-11-28 Yifan Duan , Guibin Zhang , Shilong Wang , Xiaojiang Peng , Wang Ziqi , Junyuan Mao , Hao Wu , Xinke Jiang , Kun Wang

Fraud detection problems are usually formulated as a machine learning problem on a graph. Recently, Graph Neural Networks (GNNs) have shown solid performance on fraud detection. The successes of most previous methods heavily rely on rich…

机器学习 · 计算机科学 2021-10-05 Chen Wang , Yingtong Dou , Min Chen , Jia Chen , Zhiwei Liu , Philip S. Yu

Since the emergence of joint-stock companies, financial fraud by listed firms has repeatedly undermined capital markets. Fraud is difficult to detect because of covert tactics and the high labor and time costs of audits. Traditional…

机器学习 · 计算机科学 2025-12-11 Xiao Li

Company financial risk is ubiquitous and early risk assessment for listed companies can avoid considerable losses. Traditional methods mainly focus on the financial statements of companies and lack the complex relationships among them.…

机器学习 · 计算机科学 2023-02-01 Wendong Bi , Bingbing Xu , Xiaoqian Sun , Zidong Wang , Huawei Shen , Xueqi Cheng

This paper presents a novel approach to credit risk prediction by employing Graph Convolutional Neural Networks (GCNNs) to assess the creditworthiness of borrowers. Leveraging the power of big data and artificial intelligence, the proposed…

机器学习 · 计算机科学 2024-10-08 Mengfang Sun , Wenying Sun , Ying Sun , Shaobo Liu , Mohan Jiang , Zhen Xu

This study proposes a credit card fraud detection method based on Heterogeneous Graph Neural Network (HGNN) to address fraud in complex transaction networks. Unlike traditional machine learning methods that rely solely on numerical features…

机器学习 · 计算机科学 2025-04-14 Qiuwu Sha , Tengda Tang , Xinyu Du , Jie Liu , Yixian Wang , Yuan Sheng

Graph neural networks have shown great ability in representation (GNNs) learning on graphs, facilitating various tasks. Despite their great performance in modeling graphs, recent works show that GNNs tend to inherit and amplify the bias…

机器学习 · 计算机科学 2023-08-22 Zhimeng Guo , Jialiang Li , Teng Xiao , Yao Ma , Suhang Wang

Counterfactual explanations offer an intuitive way to interpret graph neural networks (GNNs) by identifying minimal changes that alter a model's prediction, thereby answering "what must differ for a different outcome?". In this work, we…

机器学习 · 计算机科学 2026-02-09 Yu Zhang , Sean Bin Yang , Arijit Khan , Cuneyt Gurcan Akcora

Graph neural networks (GNNs) excel in graph representation learning by integrating graph structure and node features. Existing GNNs, unfortunately, fail to account for the uncertainty of class probabilities that vary with the depth of the…

机器学习 · 计算机科学 2025-06-17 Qingfeng Chen , Shiyuan Li , Yixin Liu , Shirui Pan , Geoffrey I. Webb , Shichao Zhang

Financial fraud detection is essential for preventing significant financial losses and maintaining the reputation of financial institutions. However, conventional methods of detecting financial fraud have limited effectiveness,…

Financial transaction fraud prevention faces challenges such as complex relationship structures, concealed behavioral patterns, and dynamically changing data distribution. Discrimination models relying solely on independent sample features…

机器学习 · 计算机科学 2026-05-14 Yunfei Nie , Jiawei Wang , Ruobing Yan , Yuhan Wang , Zouxiaowei Ma , Yilun Wu

Enterprise credit assessment is critical for evaluating financial risk, and Graph Neural Networks (GNNs), with their advanced capability to model inter-entity relationships, are a natural tool to get a deeper understanding of these…

机器学习 · 计算机科学 2024-07-17 Shaopeng Wei , Beni Egressy , Xingyan Chen , Yu Zhao , Fuzhen Zhuang , Roger Wattenhofer , Gang Kou

Predicting the bankruptcy risk of small and medium-sized enterprises (SMEs) is an important step for financial institutions when making decisions about loans. Existing studies in both finance and AI research fields, however, tend to only…

风险管理 · 定量金融 2024-01-10 Yu Zhao , Shaopeng Wei , Yu Guo , Qing Yang , Xingyan Chen , Qing Li , Fuzhen Zhuang , Ji Liu , Gang Kou
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