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In credit markets, screening algorithms aim to discriminate between good-type and bad-type borrowers. However, when doing so, they can also discriminate between individuals sharing a protected attribute (e.g. gender, age, racial origin) and…

Machine Learning · Statistics 2024-02-09 Christophe Hurlin , Christophe Pérignon , Sébastien Saurin

Out-of-distribution (OOD) detection aims to detect test samples that do not fall into any training in-distribution (ID) classes. Prior efforts focus on regularizing models with ID data only, largely underperforming counterparts that utilize…

Machine Learning · Computer Science 2025-05-20 Puning Yang , Jian Liang , Jie Cao , Ran He

Credit risk scorecards are logistic regression models, fitted to large and complex data sets, employed by the financial industry to model the probability of default of a potential customer. In order to ensure that a scorecard remains a…

Methodology · Statistics 2022-06-24 J. du Pisanie , J. S. Allison , I. J. H. Visagie

This study explores the use of Generative Adversarial Networks (GANs) to detect AI deepfakes and fraudulent activities in online payment systems. With the growing prevalence of deepfake technology, which can manipulate facial features in…

Machine Learning · Computer Science 2026-01-01 Zong Ke , Shicheng Zhou , Yining Zhou , Chia Hong Chang , Rong Zhang

A major challenge when trying to detect fraud is that the fraudulent activities form a minority class which make up a very small proportion of the data set. In most data sets, fraud occurs in typically less than 0.5% of the cases. Detecting…

Machine Learning · Computer Science 2020-03-27 Bart Baesens , Sebastiaan Höppner , Irene Ortner , Tim Verdonck

The proliferation of images captured from millions of cameras and the advancement of facial recognition (FR) technology have made the abuse of FR a severe privacy threat. Existing works typically rely on obfuscation, synthesis, or…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Wenjun Zhu , Yuan Sun , Jiani Liu , Yushi Cheng , Xiaoyu Ji , Wenyuan Xu

Credit card fraud detection remains a critical challenge in financial security, with machine learning models like XGBoost(eXtreme gradient boosting) emerging as powerful tools for identifying fraudulent transactions. However, the inherent…

Machine Learning · Computer Science 2024-12-11 Siyaxolisa Kabane

With the rapid development of digital services, a large volume of personally identifiable information (PII) is stored online and is subject to cyberattacks such as Identity fraud. Most recently, the use of Artificial Intelligence (AI)…

Artificial Intelligence · Computer Science 2025-01-17 Chuo Jun Zhang , Asif Q. Gill , Bo Liu , Memoona J. Anwar

Online change detection (OCD) aims to rapidly identify change points in streaming data and is critical in applications such as power system monitoring, wireless network sensing, and financial anomaly detection. Existing OCD methods…

Machine Learning · Computer Science 2025-11-18 Zelin Zhu , Yancheng Huang , Kai Yang

The article proposes an expert system for detection, and subsequent investigation, of groups of collaborating automobile insurance fraudsters. The system is described and examined in great detail, several technical difficulties in detecting…

Artificial Intelligence · Computer Science 2011-04-21 Lovro Šubelj , Štefan Furlan , Marko Bajec

Strong physical unclonable function (PUF) is a promising solution for device authentication in resourceconstrained applications but vulnerable to machine learning attacks. In order to resist such attack, many defenses have been proposed in…

Cryptography and Security · Computer Science 2019-11-14 Jiliang Zhang , Chaoqun Shen

The escalating frequency and severity of natural disasters, exacerbated by climate change, underscore the critical role of insurance in facilitating recovery and promoting investments in risk reduction. This work introduces a novel Adaptive…

Optimization and Control · Mathematics 2024-05-14 Dimitris Bertsimas , Cynthia Zeng

Approval of credit card application is one of the censorious business decision the bankers are usually taking regularly. The growing number of new card applications and the enormous outstanding amount of credit card bills during the recent…

Machine Learning · Computer Science 2021-05-14 Anupam Khan , Soumya K. Ghosh

Distributionally Robust Optimization (DRO) has been shown to provide a flexible framework for decision making under uncertainty and statistical estimation. For example, recent works in DRO have shown that popular statistical estimators can…

Machine Learning · Statistics 2020-04-21 Jose Blanchet , Yang Kang , Fan Zhang , Zhangyi Hu

We present a novel framework for distributionally robust optimization (DRO), called cost-aware DRO (CADRO). The key idea of CADRO is to exploit the cost structure in the design of the ambiguity set to reduce conservatism. Particularly, the…

Optimization and Control · Mathematics 2023-05-17 Mathijs Schuurmans , Panagiotis Patrinos

Fraudulent activities on digital banking services are becoming more intricate by the day, challenging existing defenses. While older rule driven methods struggle to keep pace, even precision focused algorithms fall short when new scams are…

Cryptography and Security · Computer Science 2026-01-21 Karthikeyan V. R. , Premnath S. , Kavinraaj S. , J. Sangeetha

Detecting money laundering in gambling is becoming increasingly challenging for the gambling industry as consumers migrate to online channels. Whilst increasingly stringent regulations have been applied over the years to prevent money…

Machine Learning · Computer Science 2021-09-28 Charitos Charitou , Simo Dragicevic , Artur d'Avila Garcez

We introduce the causal responders detection (CARD), a novel method for responder analysis that identifies treated subjects who significantly respond to a treatment. Leveraging recent advances in conformal prediction, CARD employs machine…

Methodology · Statistics 2024-06-26 Tzviel Frostig , Oshri Machluf , Amitay Kamber , Elad Berkman , Raviv Pryluk

Automatic Check-Out (ACO) receives increased interests in recent years. An important component of the ACO system is the visual item counting, which recognizes the categories and counts of the items chosen by the customers. However, the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-08 Congcong Li , Dawei Du , Libo Zhang , Tiejian Luo , Yanjun Wu , Qi Tian , Longyin Wen , Siwei Lyu

Effective out-of-distribution (OOD) detection is crucial for the safe deployment of machine learning models in real-world scenarios. However, recent work has shown that OOD detection methods are vulnerable to adversarial attacks,…

Machine Learning · Computer Science 2025-02-28 Hugo Lyons Keenan , Sarah Erfani , Christopher Leckie
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