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In an increasingly digitalized commerce landscape, the proliferation of credit card fraud and the evolution of sophisticated fraudulent techniques have led to substantial financial losses. Automating credit card fraud detection is a viable…

机器学习 · 计算机科学 2023-09-27 Zaffar Zaffar , Fahad Sohrab , Juho Kanniainen , Moncef Gabbouj

In this paper, we focus on fraud detection on a signed graph with only a small set of labeled training data. We propose a novel framework that combines deep neural networks and spectral graph analysis. In particular, we use the node…

密码学与安全 · 计算机科学 2017-06-06 Shuhan Yuan , Xintao Wu , Jun Li , Aidong Lu

Quantum machine learning has the potential for a transformative impact across industry sectors and in particular in finance. In our work we look at the problem of hedging where deep reinforcement learning offers a powerful framework for…

Deep learning is becoming increasingly popular in real-life applications, especially in natural language processing (NLP). Users often choose training outsourcing or adopt third-party data and models due to data and computation resources…

计算与语言 · 计算机科学 2022-11-23 Xuan Sheng , Zhaoyang Han , Piji Li , Xiangmao Chang

Deep Neural Network (DNN) has been showing great potential in kinds of real-world applications such as fraud detection and distress prediction. Meanwhile, data isolation has become a serious problem currently, i.e., different parties cannot…

机器学习 · 计算机科学 2020-03-13 Longfei Zheng , Chaochao Chen , Yingting Liu , Bingzhe Wu , Xibin Wu , Li Wang , Lei Wang , Jun Zhou , Shuang Yang

Blockchain provides the unique and accountable channel for financial forensics by mining its open and immutable transaction data. A recent surge has been witnessed by training machine learning models with cryptocurrency transaction data for…

密码学与安全 · 计算机科学 2023-06-13 Youssef Elmougy , Ling Liu

The number of blockchain users has tremendously grown in recent years. As an unintended consequence, e-crime transactions on blockchains has been on the rise. Consequently, public blockchains have become a hotbed of research for developing…

密码学与安全 · 计算机科学 2020-10-29 Cuneyt G. Akcora , Sudhanva Purusotham , Yulia R. Gel , Mitchell Krawiec-Thayer , Murat Kantarcioglu

We introduce novel approaches to cryptocurrency price forecasting, leveraging Machine Learning (ML) and Natural Language Processing (NLP) techniques, with a focus on Bitcoin and Ethereum. By analysing news and social media content,…

统计金融 · 定量金融 2024-10-28 Vincent Gurgul , Stefan Lessmann , Wolfgang Karl Härdle

Smart contract, one of the most successful applications of blockchain, is taking the world by storm, playing an essential role in the blockchain ecosystem. However, frequent smart contract security incidents not only result in tremendous…

密码学与安全 · 计算机科学 2022-09-14 Peng Qian , Zhenguang Liu , Qinming He , Butian Huang , Duanzheng Tian , Xun Wang

A robust and reliable system of detecting spam reviews is a crying need in todays world in order to purchase products without being cheated from online sites. In many online sites, there are options for posting reviews, and thus creating…

计算与语言 · 计算机科学 2022-11-04 G. M. Shahariar , Swapnil Biswas , Faiza Omar , Faisal Muhammad Shah , Samiha Binte Hassan

Cyber attacks continue to pose significant threats to individuals and organizations, stealing sensitive data such as personally identifiable information, financial information, and login credentials. Hence, detecting malicious websites…

密码学与安全 · 计算机科学 2024-04-16 Saroj Gopali , Akbar S. Namin , Faranak Abri , Keith S. Jones

In recent years, phishing scams have become the crime type with the largest money involved on Ethereum, the second-largest blockchain platform. Meanwhile, graph neural network (GNN) has shown promising performance in various node…

机器学习 · 计算机科学 2021-06-21 Shucheng Li , Fengyuan Xu , Runchuan Wang , Sheng Zhong

Machine learning models have widely been used in fraud detection systems. Most of the research and development efforts have been concentrated on improving the performance of the fraud scoring models. Yet, the downstream fraud alert systems…

机器学习 · 计算机科学 2020-10-22 Hongda Shen , Eren Kurshan

Android is the predominant mobile operating system for the past few years. The prevalence of devices that can be powered by Android magnetized not merely application developers but also malware developers with criminal intention to design…

密码学与安全 · 计算机科学 2018-12-27 Abdelmonim Naway , Yuancheng LI

Card transaction fraud is a growing problem affecting card holders worldwide. Financial institutions increasingly rely upon data-driven methods for developing fraud detection systems, which are able to automatically detect and block…

应用统计 · 统计学 2020-05-07 Sebastiaan Höppner , Bart Baesens , Wouter Verbeke , Tim Verdonck

In the modern era, malware is experiencing a significant increase in both its variety and quantity, aligning with the widespread adoption of the digital world. This surge in malware has emerged as a critical challenge in the realm of…

密码学与安全 · 计算机科学 2024-07-16 Amaal F. Alshmarni , Mohammed A. Alliheedi

The use of credit cards has become quite common these days as digital banking has become the norm. With this increase, fraud in credit cards also has a huge problem and loss to the banks and customers alike. Normal fraud detection systems,…

机器学习 · 计算机科学 2022-06-28 Bushra Yousuf , Rejwan Bin Sulaiman , Musarrat Saberin Nipun

Crime prediction is a widely studied research problem due to its importance in ensuring safety of city dwellers. Starting from statistical and classical machine learning based crime prediction methods, in recent years researchers have…

机器学习 · 计算机科学 2024-07-30 Rittik Basak Utsha , Muhtasim Noor Alif , Yeasir Rayhan , Tanzima Hashem , Mohammad Eunus Ali

Community detection, a fundamental task for network analysis, aims to partition a network into multiple sub-structures to help reveal their latent functions. Community detection has been extensively studied in and broadly applied to many…

社会与信息网络 · 计算机科学 2021-08-17 Di Jin , Zhizhi Yu , Pengfei Jiao , Shirui Pan , Dongxiao He , Jia Wu , Philip S. Yu , Weixiong Zhang

While transactions with cryptocurrencies such as Ethereum are becoming more prevalent, fraud and other criminal transactions are not uncommon. Graph analysis algorithms and machine learning techniques detect suspicious transactions that…

机器学习 · 计算机科学 2022-07-05 Hiroki Kanezashi , Toyotaro Suzumura , Xin Liu , Takahiro Hirofuchi