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The widespread adoption of encrypted communication protocols such as HTTPS and TLS has enhanced data privacy but also rendered traditional anomaly detection techniques less effective, as they often rely on inspecting unencrypted payloads.…

密码学与安全 · 计算机科学 2025-05-23 Kalindi Singh , Aayush Kashyap , Aswani Kumar Cherukuri

Context-based detection methods such as DetectGPT achieve strong generalization in identifying AI-generated text by evaluating content compatibility with a model's learned distribution. In contrast, existing image detectors rely on…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Minsuk Jang , Hyunseo Jeong , Minseok Son , Changick Kim

Recent works have established that AI models introduce spectral artifacts into generated images and propose approaches for learning to capture them using labeled data. However, the significant differences in such artifacts among different…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Dimitrios Karageorgiou , Symeon Papadopoulos , Ioannis Kompatsiaris , Efstratios Gavves

Anomaly detection in tabular data remains challenging due to complex feature interactions and the scarcity of anomalous examples. Denoising autoencoders rely on fixed-magnitude noise, limiting adaptability to diverse data distributions.…

机器学习 · 计算机科学 2025-08-04 Timur Sattarov , Marco Schreyer , Damian Borth

Anomaly detection is being regarded as an unsupervised learning task as anomalies stem from adversarial or unlikely events with unknown distributions. However, the predictive performance of purely unsupervised anomaly detection often fails…

机器学习 · 计算机科学 2014-01-27 Nico Goernitz , Marius Micha Kloft , Konrad Rieck , Ulf Brefeld

Anomaly detection is fundamental yet, challenging problem with practical applications in industry. The current approaches neglect the higher-order dependencies within the networks of interconnected sensors in the high-dimensional time…

机器学习 · 计算机科学 2024-08-22 Sakhinana Sagar Srinivas , Rajat Kumar Sarkar , Venkataramana Runkana

Unsupervised industrial anomaly detection requires accurately identifying defects without labeled data. Traditional autoencoder-based methods often struggle with incomplete anomaly suppression and loss of fine details, as their single-pass…

计算机视觉与模式识别 · 计算机科学 2025-12-15 Rongcheng Wu , Hao Zhu , Shiying Zhang , Mingzhe Wang , Zhidong Li , Hui Li , Jianlong Zhou , Jiangtao Cui , Fang Chen , Pingyang Sun , Qiyu Liao , Ye Lin

Hyperspectral data acquired through remote sensing are invaluable for environmental and resource studies. While rich in spectral information, various complexities such as environmental conditions, material properties, and sensor…

地球物理 · 物理学 2025-01-16 Archisman Bhattacharjee , Pawan Bharadwaj

Weakly-supervised anomaly detection aims at learning an anomaly detector from a limited amount of labeled data and abundant unlabeled data. Recent works build deep neural networks for anomaly detection by discriminatively mapping the normal…

机器学习 · 计算机科学 2021-08-29 Yingjie Zhou , Xucheng Song , Yanru Zhang , Fanxing Liu , Ce Zhu , Lingqiao Liu

Anomaly detection is critically important for intelligent surveillance systems to detect in a timely manner any malicious activities. Many video anomaly detection approaches using deep learning methods focus on a single camera video stream…

计算机视觉与模式识别 · 计算机科学 2020-10-07 Chongke Wu , Sicong Shao , Cihan Tunc , Salim Hariri

Explainable Artificial Intelligence (XAI) models have recently attracted a great deal of interest from a variety of application sectors. Despite significant developments in this area, there are still no standardized methods or approaches…

机器学习 · 计算机科学 2023-12-08 Sarit Maitra , Vivek Mishra , Pratima Verma , Manav Chopra , Priyanka Nath

Despite inherent ill-definition, anomaly detection is a research endeavor of great interest within machine learning and visual scene understanding alike. Most commonly, anomaly detection is considered as the detection of outliers within a…

计算机视觉与模式识别 · 计算机科学 2019-05-03 Samet Akçay , Amir Atapour-Abarghouei , Toby P. Breckon

Botnets are increasingly used by malicious actors, creating increasing threat to a large number of internet users. To address this growing danger, we propose to study methods to detect botnets, especially those that are hard to capture with…

密码学与安全 · 计算机科学 2020-04-02 Jeeyung Kim , Alex Sim , Jinoh Kim , Kesheng Wu

Anomaly detection is the task of identifying rarely occurring (i.e. anormal or anomalous) samples that differ from almost all other samples in a dataset. As the patterns of anormal samples are usually not known a priori, this task is highly…

应用统计 · 统计学 2025-06-30 Nicolas Thewes , Philipp Steinhauer , Patrick Trampert , Markus Pauly , Georg Schneider

Spectral clustering is a leading and popular technique in unsupervised data analysis. Two of its major limitations are scalability and generalization of the spectral embedding (i.e., out-of-sample-extension). In this paper we introduce a…

机器学习 · 统计学 2024-11-06 Uri Shaham , Kelly Stanton , Henry Li , Boaz Nadler , Ronen Basri , Yuval Kluger

Network security threats in embedded systems pose significant challenges to critical infrastructure protection. This paper presents a comprehensive framework combining ensemble learning methods with explainable artificial intelligence (XAI)…

密码学与安全 · 计算机科学 2026-04-20 Wanru Shao

Unsupervised anomaly detection (UAD) has been widely implemented in industrial and medical applications, which reduces the cost of manual annotation and improves efficiency in disease diagnosis. Recently, deep auto-encoder with its variants…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Mingqing Wang , Jiawei Li , Zhenyang Li , Chengxiao Luo , Bin Chen , Shu-Tao Xia , Zhi Wang

Deep anomaly detection methods have become increasingly popular in recent years, with methods like Stacked Autoencoders, Variational Autoencoders, and Generative Adversarial Networks greatly improving the state-of-the-art. Other methods…

计算与语言 · 计算机科学 2024-01-09 Andrei Manolache

We present a novel method for image anomaly detection, where algorithms that use samples drawn from some distribution of "normal" data, aim to detect out-of-distribution (abnormal) samples. Our approach includes a combination of encoder and…

图像与视频处理 · 电气工程与系统科学 2020-03-02 Nina Tuluptceva , Bart Bakker , Irina Fedulova , Anton Konushin

Anomaly detection (such as telecom fraud detection and medical image detection) has attracted the increasing attention of people. The complex interaction between multiple entities widely exists in the network, which can reflect specific…

机器学习 · 计算机科学 2024-06-10 Xu Yuan , Na Zhou , Shuo Yu , Huafei Huang , Zhikui Chen , Feng Xia