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Machine learning techniques in particle physics are most powerful when they are trained directly on data, to avoid sensitivity to theoretical uncertainties or an underlying bias on the expected signal. To be able to train on data in…

High Energy Physics - Phenomenology · Physics 2019-10-21 Andrew Blance , Michael Spannowsky , Philip Waite

Conditional Generative Adversarial Networks (cGANs) extend the standard unconditional GAN framework to learning joint data-label distributions from samples, and have been established as powerful generative models capable of generating…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Ligong Han , Martin Renqiang Min , Anastasis Stathopoulos , Yu Tian , Ruijiang Gao , Asim Kadav , Dimitris Metaxas

Sufficient supervised information is crucial for any machine learning models to boost performance. However, labeling data is expensive and sometimes difficult to obtain. Active learning is an approach to acquire annotations for data from a…

Machine Learning · Computer Science 2019-06-18 Quan Kong , Bin Tong , Martin Klinkigt , Yuki Watanabe , Naoto Akira , Tomokazu Murakami

Generative adversarial networks have achieved remarkable performance on various tasks but suffer from training instability. Despite many training strategies proposed to improve training stability, this issue remains as a challenge. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Faqiang Liu , Mingkun Xu , Guoqi Li , Jing Pei , Luping Shi , Rong Zhao

Adversarial examples are intentionally crafted data with the purpose of deceiving neural networks into misclassification. When we talk about strategies to create such examples, we usually refer to perturbation-based methods that fabricate…

Computer Vision and Pattern Recognition · Computer Science 2018-06-28 Shih-hong Tsai

We introduce a method to stabilize Generative Adversarial Networks (GANs) by defining the generator objective with respect to an unrolled optimization of the discriminator. This allows training to be adjusted between using the optimal…

Machine Learning · Computer Science 2017-05-16 Luke Metz , Ben Poole , David Pfau , Jascha Sohl-Dickstein

With the wide application of knowledge distillation between an ImageNet pre-trained teacher model and a learnable student model, unsupervised anomaly detection has witnessed a significant achievement in the past few years. The success of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Canhui Tang , Sanping Zhou , Yizhe Li , Yonghao Dong , Le Wang

Deep learning has greatly improved visual recognition in recent years. However, recent research has shown that there exist many adversarial examples that can negatively impact the performance of such an architecture. This paper focuses on…

Computer Vision and Pattern Recognition · Computer Science 2017-10-30 Xin Li , Fuxin Li

Automated detection of abnormalities in data has been studied in research area in recent years because of its diverse applications in practice including video surveillance, industrial damage detection and network intrusion detection.…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Hung Vu , Dinh Phung , Tu Dinh Nguyen , Anthony Trevors , Svetha Venkatesh

Traditional classification algorithms assume that training and test data come from similar distributions. This assumption is violated in adversarial settings, where malicious actors modify instances to evade detection. A number of custom…

Computer Science and Game Theory · Computer Science 2016-11-29 Bo Li , Yevgeniy Vorobeychik , Xinyun Chen

Generative adversarial networks (GANs) are able to model the complex highdimensional distributions of real-world data, which suggests they could be effective for anomaly detection. However, few works have explored the use of GANs for the…

Machine Learning · Computer Science 2019-05-03 Houssam Zenati , Chuan Sheng Foo , Bruno Lecouat , Gaurav Manek , Vijay Ramaseshan Chandrasekhar

Quantum computing may offer new approaches for advancing machine learning, including in complex tasks such as anomaly detection in network traffic. In this paper, we introduce a quantum generative adversarial network (QGAN) architecture for…

Machine Learning · Computer Science 2025-05-20 Wajdi Hammami , Soumaya Cherkaoui , Shengrui Wang

In standard generative deep learning models, such as autoencoders or GANs, the size of the parameter set is proportional to the complexity of the generated data distribution. A significant challenge is to deploy resource-hungry deep…

Machine Learning · Computer Science 2021-10-29 Shreshth Tuli , Shikhar Tuli , Giuliano Casale , Nicholas R. Jennings

In this paper, we employ a 1D deep convolutional generative adversarial network (DCGAN) for sequential anomaly detection in energy time series data. Anomaly detection involves gradient descent to reconstruct energy sub-sequences,…

Machine Learning · Computer Science 2024-02-23 Hardik Prabhu , Jayaraman Valadi , Pandarasamy Arjunan

Anomaly detection in supercomputers is a very difficult problem due to the big scale of the systems and the high number of components. The current state of the art for automated anomaly detection employs Machine Learning methods or…

Machine Learning · Computer Science 2020-07-30 Andrea Borghesi , Andrea Bartolini , Michele Lombardi , Michela Milano , Luca Benini

Deep neural networks are vulnerable to adversarial examples, i.e., carefully-crafted inputs that mislead classification at test time. Recent defenses have been shown to improve adversarial robustness by detecting anomalous deviations from…

Machine Learning · Computer Science 2020-10-20 Francesco Crecchi , Marco Melis , Angelo Sotgiu , Davide Bacciu , Battista Biggio

Adversarial classification is the task of performing robust classification in the presence of a strategic attacker. Originating from information hiding and multimedia forensics, adversarial classification recently received a lot of…

Cryptography and Security · Computer Science 2018-03-12 Pascal Schöttle , Alexander Schlögl , Cecilia Pasquini , Rainer Böhme

With the recent developments in artificial intelligence and machine learning, anomalies in network traffic can be detected using machine learning approaches. Before the rise of machine learning, network anomalies which could imply an…

Machine Learning · Computer Science 2020-04-10 Aritran Piplai , Sai Sree Laya Chukkapalli , Anupam Joshi

Anomaly detection in medical images is challenging due to limited annotations and a domain gap compared to natural images. Existing reconstruction methods often rely on frozen pre-trained encoders, which limits adaptation to domain-specific…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Luhu Li , Bowen Lin , Mukhtiar Khan , Shujun Fu

Anomaly detection is a challenging task that frequently arises in practically all areas of industry and science, from fraud detection and data quality monitoring to finding rare cases of diseases and searching for new physics. Most of the…

Machine Learning · Computer Science 2021-11-22 Artem Ryzhikov , Maxim Borisyak , Andrey Ustyuzhanin , Denis Derkach