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Due to the veracity and heterogeneity in network traffic, detecting anomalous events is challenging. The computational load on global servers is a significant challenge in terms of efficiency, accuracy, and scalability. Our primary…

机器学习 · 计算机科学 2023-03-15 William Marfo , Deepak K. Tosh , Shirley V. Moore

With the rapid growth of financial services, fraud detection has been a very important problem to guarantee a healthy environment for both users and providers. Conventional solutions for fraud detection mainly use some rule-based methods or…

社会与信息网络 · 计算机科学 2020-03-05 Daixin Wang , Jianbin Lin , Peng Cui , Quanhui Jia , Zhen Wang , Yanming Fang , Quan Yu , Jun Zhou , Shuang Yang , Yuan Qi

In this paper, we propose the Adversarial Denoising Diffusion Model (ADDM). The ADDM is based on the Denoising Diffusion Probabilistic Model (DDPM) but complementarily trained by adversarial learning. The proposed adversarial learning is…

图像与视频处理 · 电气工程与系统科学 2023-12-08 Jongmin Yu , Hyeontaek Oh , Jinhong Yang

We propose an automatic unsupervised cell event detection and classification method, which expands convolutional Long Short-Term Memory (LSTM) neural networks, for cellular events in cell video sequences. Cells in images that are captured…

计算机视觉与模式识别 · 计算机科学 2017-09-08 Ha Tran Hong Phan , Ashnil Kumar , David Feng , Michael Fulham , Jinman Kim

Self-supervised learning (SSL) is a growing torrent that has recently transformed machine learning and its many real world applications, by learning on massive amounts of unlabeled data via self-generated supervisory signals. Unsupervised…

机器学习 · 计算机科学 2023-08-29 Leman Akoglu , Jaemin Yoo

Detecting fraud in modern supply chains is a growing challenge, driven by the complexity of global networks and the scarcity of labeled data. Traditional detection methods often struggle with class imbalance and limited supervision,…

机器学习 · 计算机科学 2025-08-12 Fatemeh Moradi , Mehran Tarif , Mohammadhossein Homaei

Unsupervised anomaly detection is a promising technique for identifying unusual patterns in data without the need for labeled training examples. This approach is particularly valuable for early case detection in epidemic management,…

机器学习 · 计算机科学 2025-05-06 Ghazal Ghajari , Mithun Kumar PK , Fathi Amsaad

Uncertain data streams have been widely generated in many Web applications. The uncertainty in data streams makes anomaly detection from sensor data streams far more challenging. In this paper, we present a novel framework that supports…

人工智能 · 计算机科学 2016-07-21 Jiangang Ma , Le Sun , Hua Wang , Yanchun Zhang , Uwe Aickelin

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

机器学习 · 计算机科学 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

Anomaly detection is widely used in a broad range of domains from cybersecurity to manufacturing, finance, and so on. Deep learning based anomaly detection has recently drawn much attention because of its superior capability of recognizing…

机器学习 · 计算机科学 2023-05-23 Ronit Das , Tie Luo

Anomaly detection is the process of identifying abnormal instances or events in data sets which deviate from the norm significantly. In this study, we propose a signatures based machine learning algorithm to detect rare or unexpected items…

计算金融 · 定量金融 2022-02-09 Erdinc Akyildirim , Matteo Gambara , Josef Teichmann , Syang Zhou

Anomaly detection is an emerging approach in digital pathology for its ability to efficiently and effectively utilize data for disease diagnosis. While supervised learning approaches deliver high accuracy, they rely on extensively annotated…

图像与视频处理 · 电气工程与系统科学 2025-08-22 Jiamu Wang , Keunho Byeon , Jinsol Song , Anh Nguyen , Sangjeong Ahn , Sung Hak Lee , Jin Tae Kwak

Fraud detection is extremely critical for e-commerce business. It is the intent of the companies to detect and prevent fraud as early as possible. Existing fraud detection methods try to identify unexpected dense subgraphs and treat related…

机器学习 · 计算机科学 2020-11-09 Yuxiang Ren , Hao Zhu , Jiawei Zhang , Peng Dai , Liefeng Bo

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…

机器学习 · 计算机科学 2021-11-22 Artem Ryzhikov , Maxim Borisyak , Andrey Ustyuzhanin , Denis Derkach

This article introduces a novel method for detecting anomalies within log data from control system nodes at the European XFEL accelerator. Effective anomaly detection is crucial for providing operators with a clear understanding of each…

密码学与安全 · 计算机科学 2025-09-26 Antonin Sulc , Annika Eichler , Tim Wilksen

Semi-supervised learning has made significant strides in the medical domain since it alleviates the heavy burden of collecting abundant pixel-wise annotated data for semantic segmentation tasks. Existing semi-supervised approaches enhance…

计算机视觉与模式识别 · 计算机科学 2021-12-03 Xu Zheng , Chong Fu , Haoyu Xie , Jialei Chen , Xingwei Wang , Chiu-Wing Sham

Anomaly detection is the problem of recognizing abnormal inputs based on the seen examples of normal data. Despite recent advances of deep learning in recognizing image anomalies, these methods still prove incapable of handling complex…

计算机视觉与模式识别 · 计算机科学 2021-09-14 Nina Shvetsova , Bart Bakker , Irina Fedulova , Heinrich Schulz , Dmitry V. Dylov

In the evolving landscape of Federated Learning (FL), the challenge of ensuring data integrity against poisoning attacks is paramount, particularly for applications demanding stringent privacy preservation. Traditional anomaly detection…

密码学与安全 · 计算机科学 2024-03-18 Zahir Alsulaimawi

Federated learning (FL) is an effective paradigm for distributed environments such as the Internet of Things (IoT), where data from diverse devices with varying functionalities remains localized while contributing to a shared global model.…

机器学习 · 计算机科学 2026-03-02 Mohsen Tajgardan , Atena Shiranzaei , Mahdi Rabbani , Reza Khoshkangini , Mahtab Jamali

Anomaly detection is a fundamental task in machine learning and data mining, with significant applications in cybersecurity, industrial fault diagnosis, and clinical disease monitoring. Traditional methods, such as statistical modeling and…

机器学习 · 计算机科学 2025-05-09 Yi Chen