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Frauds severely hurt many kinds of Internet businesses. Group-based fraud detection is a popular methodology to catch fraudsters who unavoidably exhibit synchronized behaviors. We combine both graph-based features (e.g. cluster density) and…

Cryptography and Security · Computer Science 2018-06-26 Yikun Ban , Xin Liu , Tianyi Zhang , Ling Huang , Yitao Duan , Xue Liu , Wei Xu

The rapid progress in deep generative models has led to the creation of incredibly realistic synthetic images that are becoming increasingly difficult to distinguish from real-world data. The widespread use of Variational Models, Diffusion…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Anant Mehta , Bryant McArthur , Nagarjuna Kolloju , Zhengzhong Tu

The burgeoning e-Commerce sector requires advanced solutions for the detection of transaction fraud. With an increasing risk of financial information theft and account takeovers, deep learning methods have become integral to the embedding…

Machine Learning · Computer Science 2025-05-19 Bo Qu , Zhurong Wang , Minghao Gu , Daisuke Yagi , Yang Zhao , Yinan Shan , Frank Zahradnik

Multi-source data classification is a critical yet challenging task for remote sensing image interpretation. Existing methods lack adaptability to diverse land cover types when modeling frequency domain features. To this end, we propose a…

Image and Video Processing · Electrical Eng. & Systems 2025-07-08 Yikang Zhao , Feng Gao , Xuepeng Jin , Junyu Dong , Qian Du

Federated learning combined with blockchain empowers secure data sharing in autonomous driving applications. Nevertheless, with the increasing granularity and complexity of vehicle-generated data, the lack of data quality audits raises…

Machine Learning · Computer Science 2024-07-30 Weiliang Chen , Li Jia , Yang Zhou , Qianqian Ren

In e-commerce industry, user behavior sequence data has been widely used in many business units such as search and merchandising to improve their products. However, it is rarely used in financial services not only due to its 3V…

Machine Learning · Computer Science 2021-01-13 Wei Min , Weiming Liang , Hang Yin , Zhurong Wang , Mei Li , Alok Lal

Credit card fraud has been a persistent issue since the last century, causing significant financial losses to the industry. The most effective way to prevent fraud is by contacting customers to verify suspicious transactions. However, while…

Machine Learning · Computer Science 2026-02-09 Menghao Huo , Kuan Lu , Qiang Zhu , Zhenrui Chen

A network provides powerful means of representing complex relationships between entities by abstracting entities as vertices, and relationships as edges connecting vertices in a graph. Beyond the presence or absence of relationships, a…

Social and Information Networks · Computer Science 2020-01-15 Isuru Udayangani Hewapathirana

Blockchain technology, a foundational distributed ledger system, enables secure and transparent multi-party transactions. Despite its advantages, blockchain networks are susceptible to anomalies and frauds, posing significant risks to their…

Cryptography and Security · Computer Science 2024-02-20 Joerg Osterrieder , Stephen Chan , Jeffrey Chu , Yuanyuan Zhang , Branka Hadji Misheva , Codruta Mare

The untraceability of transactions facilitated by Ethereum mixing services like Tornado Cash poses significant challenges to blockchain security and financial regulation. Existing methods for correlating mixing accounts suffer from limited…

Cryptography and Security · Computer Science 2025-05-16 Zheng Che , Taoyu Li , Meng Shen , Hanbiao Du , Liehuang Zhu

Rapid growth of modern technologies such as internet and mobile computing are bringing dramatically increased e-commerce payments, as well as the explosion in transaction fraud. Meanwhile, fraudsters are continually refining their tricks,…

Cryptography and Security · Computer Science 2018-03-20 Xurui Li , Wei Yu , Tianyu Luwang , Jianbin Zheng , Xuetao Qiu , Jintao Zhao , Lei Xia , Yujiao Li

Current methods to prevent crypto asset fraud are based on the analysis of transaction graphs within blockchain networks. While effective for identifying transaction patterns indicative of fraud, it does not capture the semantics of…

Cryptography and Security · Computer Science 2024-05-31 Philipp Stangl , Christoph P. Neumann

Blockchain technology is ushering in another break-out year, the challenge of blockchain still remains to be solved. This paper analyzes the features of Bitcoin and Bitcoin-NG system based on blockchain, proposes an improved method of…

Cryptography and Security · Computer Science 2018-11-01 Jia Kan , Shangzhe Chen , Xin Huang

Financial crime detection using graph learning improves financial safety and efficiency. However, criminals may commit financial crimes across different institutions to avoid detection, which increases the difficulty of detection for…

Cryptography and Security · Computer Science 2023-10-13 Zhirui Pan , Guangzhong Wang , Zhaoning Li , Lifeng Chen , Yang Bian , Zhongyuan Lai

Multi-modality image fusion aims at fusing modality-specific (complementarity) and modality-shared (correlation) information from multiple source images. To tackle the problem of the neglect of inter-feature relationships, high-frequency…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Xiaoli Zhang , Liying Wang , Libo Zhao , Xiongfei Li , Siwei Ma

Semantic parsing has long been a fundamental problem in natural language processing. Recently, cross-domain context-dependent semantic parsing has become a new focus of research. Central to the problem is the challenge of leveraging…

Computation and Language · Computer Science 2021-01-06 Binyuan Hui , Ruiying Geng , Qiyu Ren , Binhua Li , Yongbin Li , Jian Sun , Fei Huang , Luo Si , Pengfei Zhu , Xiaodan Zhu

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…

Credit card fraud is a major issue nowadays, costing huge money and affecting trust in financial systems. Traditional fraud detection methods often fail to detect advanced and growing fraud techniques. This study focuses on using Graph…

Cryptography and Security · Computer Science 2025-04-01 Irin Sultana , Syed Mustavi Maheen , Naresh Kshetri , Md Nasim Fardous Zim

Accurate and real-time traffic state prediction is of great practical importance for urban traffic control and web mapping services. With the support of massive data, deep learning methods have shown their powerful capability in capturing…

Machine Learning · Computer Science 2023-09-07 Xunlian Luo , Chunjiang Zhu , Detian Zhang , Qing Li

Financial systems have a growing reliance on computer-based and distributed systems, making FinTech systems vulnerable to advanced and quickly emerging cyber-criminal threats. Traditional security systems and fixed machine learning systems…

Cryptography and Security · Computer Science 2026-03-26 Gunjan Mishra , Yash Mishra