Exploring Unsupervised Anomaly Detection with Quantum Boltzmann Machines in Fraud Detection

Stein, Jonas ; Schuman, Daniëlle; Benkard, Magdalena; Holger, Thomas; Sajko, Wanja; Kölle, Michael; Nüßlein, Jonas ; Sünkel, Leo; Salomon, Olivier und Linnhoff-Popien, Claudia (2024): Exploring Unsupervised Anomaly Detection with Quantum Boltzmann Machines in Fraud Detection. ICAART 2024: 16th International Conference on Agents and Artificial Intelligence, Rome, Italy, 24. - 26. Februar 2024. Rocha, Ana Paula; Steels, Luc und Herik, Jaap van den (eds.) : In: Proceedings of the 16th International Conference on Agents and Artificial Intelligence, Vol. 2 Setúbal: SciTePress. pp. 177-185

Abstract

Anomaly detection in Endpoint Detection and Response (EDR) is a critical task in cybersecurity programs of large companies. With rapidly growing amounts of data and the omnipresence of zero-day attacks, manual and rule-based detection techniques are no longer eligible in practice. While classical machine learning approaches to this problem exist, they frequently show unsatisfactory performance in differentiating malicious from benign anomalies. A promising approach to attain superior generalization compard to currently employed machine learning techniques is using quantum generative models. Allowing for the largest representation of data on available quantum hardware, we investigate Quantum-Annealing-based Quantum Boltzmann Machines (QBMs) for the given problem. We contribute the first fully unsupervised approach for the problem of anomaly detection using QBMs and evaluate its performance on an EDR-inspired synthetic dataset. Our results indicate that QBMs can outperform their classical analog (i.e., Restricted Boltzmann Machines) in terms of result quality and training steps in special cases. When employing Quantum Annealers from D-Wave Systems, we conclude that either more accurate classical simulators or substantially more QPU time is needed to conduct the necessary hyperparameter optimization allowing to replicate our simulation results on quantum hardware.

• Item Type: Conference or Workshop Item (Paper)
• Faculties: Mathematics, Computer Science and Statistics > Computer Science > Artificial Intelligence and Machine Learning
• Subjects: 000 Computer science, information and general works > 004 Data processing computer science
• ISBN: 978-989-758-680-4
• Place of Publication: Setúbal
• Language: English