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Modern machine learning (ML) systems demand substantial training data, often resorting to external sources. Nevertheless, this practice renders them vulnerable to backdoor poisoning attacks. Prior backdoor defense strategies have primarily…

Machine Learning · Computer Science 2024-03-19 Soumyadeep Pal , Yuguang Yao , Ren Wang , Bingquan Shen , Sijia Liu

Class imbalance classification is a challenging research problem in data mining and machine learning, as most of the real-life datasets are often imbalanced in nature. Existing learning algorithms maximise the classification accuracy by…

Machine Learning · Computer Science 2018-09-05 Farshid Rayhan , Sajid Ahmed , Asif Mahbub , Md. Rafsan Jani , Swakkhar Shatabda , Dewan Md. Farid

This paper discusses financial fraud detection in imbalanced dataset using homogeneous and non-homogeneous Poisson processes. The probability of predicting fraud on the financial transaction is derived. Applying our methodology to the…

Risk Management · Quantitative Finance 2019-12-11 Régis Houssou , Jérôme Bovay , Stephan Robert

Transformer-based neural networks, empowered by Self-Supervised Learning (SSL), have demonstrated unprecedented performance across various domains. However, related literature suggests that tabular Transformers may struggle to outperform…

In recent years, the clandestine nature of darknet activities has presented an escalating challenge to cybersecurity efforts, necessitating sophisticated methods for the detection and classification of network traffic associated with these…

Machine Learning · Computer Science 2024-08-31 Anjali Sureshkumar Nair , Prashant Nitnaware

Context: Research at the intersection of cybersecurity, Machine Learning (ML), and Software Engineering (SE) has recently taken significant steps in proposing countermeasures for detecting sophisticated data exfiltration attacks. It is…

Cryptography and Security · Computer Science 2021-03-23 Bushra Sabir , Faheem Ullah , M. Ali Babar , Raj Gaire

Advertising click fraud detection plays one of the vital roles in current E-commerce websites as advertising is an essential component of its business model. It aims at, given a set of corresponding features, e.g., demographic information…

Machine Learning · Computer Science 2021-05-11 Weibin Li , Qiwei Zhong , Qingyang Zhao , Hongchun Zhang , Xiaonan Meng

As financial fraud becomes increasingly complex, effective detection methods are essential. Quantum Machine Learning (QML) introduces certain capabilities that may enhance both accuracy and efficiency in this area. This study examines how…

Quantum Physics · Physics 2026-02-12 Mansour El Alami , Nouhaila Innan , Muhammad Shafique , Mohamed Bennai

The impressive growth of smartphone devices in combination with the rising ubiquity of using mobile platforms for sensitive applications such as Internet banking, have triggered a rapid increase in mobile malware. In recent literature, many…

Cryptography and Security · Computer Science 2023-12-20 Harris Papadopoulos , Nestoras Georgiou , Charalambos Eliades , Andreas Konstantinidis

100% inverter-based renewable units are becoming more prevalent, introducing new challenges in the protection of microgrids that incorporate these resources. This is particularly due to low fault currents and bidirectional flows. Previous…

Systems and Control · Electrical Eng. & Systems 2024-08-13 Milad Beikbabaei , Michael Lindemann , Mohammad Heidari Kapourchali , Ali Mehrizi-Sani

Software bias is an increasingly important operational concern for software engineers. We present a large-scale, comprehensive empirical study of 17 representative bias mitigation methods for Machine Learning (ML) classifiers, evaluated…

Software Engineering · Computer Science 2023-02-13 Zhenpeng Chen , Jie M. Zhang , Federica Sarro , Mark Harman

Card payment fraud is a serious problem, and a roadblock for an optimally functioning digital economy, with cards (Debits and Credit) being the most popular digital payment method across the globe. Despite the occurrence of fraud could be…

Cryptography and Security · Computer Science 2020-12-01 Bemali Wickramanayake , Dakshi Kapugama Geeganage , Chun Ouyang , Yue Xu

Churn prediction in credit cards, fraud detection in insurance, and loan default prediction are important analytical customer relationship management (ACRM) problems. Since frauds, churns and defaults happen less frequently, the datasets…

Machine Learning · Computer Science 2022-02-11 Prateek Kate , Vadlamani Ravi , Akhilesh Gangwar

Ensuring reliable ATM services is essential for modern banking, directly impacting customer satisfaction and the operational efficiency of financial institutions. This study introduces a data fusion approach that utilizes multi-classifier…

Machine Learning · Computer Science 2025-01-03 Alireza Safarzadeh , Mohammad Reza Jamali , Behzad Moshiri

Android malware detection continues to face persistent challenges stemming from long-term concept drift and class imbalance, as evolving malicious behaviors and shifting usage patterns dynamically reshape feature distributions. Although…

Computational Engineering, Finance, and Science · Computer Science 2025-09-10 Yi Xie , Ziyuan Yang , Yongqiang Huang , Yinyu Chen , Lei Zhang , Liang Liu , Yi Zhang

Machine learning has been successfully applied in developing malware detection systems, with a primary focus on accuracy, and increasing attention to reducing computational overhead and improving model interpretability. However, an…

Cryptography and Security · Computer Science 2025-03-07 Oladipo A. Madamidola , Felix Ngobigha , Adnane Ez-zizi

Numerous studies attempt to mitigate classification bias caused by class imbalance. However, existing studies have yet to explore the collaborative optimization of imbalanced learning and model training. This constraint hinders further…

Machine Learning · Computer Science 2025-12-30 Chuantao Li , Zhi Li , Jiahao Xu , Jie Li , Sheng Li

Existing semi-supervised learning (SSL) algorithms typically assume class-balanced datasets, although the class distributions of many real-world datasets are imbalanced. In general, classifiers trained on a class-imbalanced dataset are…

Machine Learning · Computer Science 2021-10-22 Hyuck Lee , Seungjae Shin , Heeyoung Kim

Machine learning (ML) based approaches have been the mainstream solution for anti-phishing detection. When they are deployed on the client-side, ML-based classifiers are vulnerable to evasion attacks. However, such potential threats have…

Cryptography and Security · Computer Science 2020-04-16 Yusi Lei , Sen Chen , Lingling Fan , Fu Song , Yang Liu

Machine Learning-based supervised approaches require highly customized and fine-tuned methodologies to deliver outstanding performance. This paper presents a dataset-driven design and performance evaluation of a machine learning classifier…

Cryptography and Security · Computer Science 2022-05-13 Zeinab Zoghi , Gursel Serpen