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Learning to detect real-world anomalous events using video-level annotations is a difficult task mainly because of the noise present in labels. An anomalous labelled video may actually contain anomaly only in a short duration while the rest…

计算机视觉与模式识别 · 计算机科学 2021-05-03 Muhammad Zaigham Zaheer , Jin-ha Lee , Marcella Astrid , Arif Mahmood , Seung-Ik Lee

This paper addresses performance degradation in anomalous sound detection (ASD) when neither sufficiently similar machine data nor operational state labels are available. We present an integrated pipeline that combines three complementary…

声音 · 计算机科学 2025-05-27 Ibuki Kuroyanagi , Takuya Fujimura , Kazuya Takeda , Tomoki Toda

Signal detection in environments with unknown signal bandwidth and time intervals is a fundamental problem in adversarial and spectrum-sharing scenarios. This paper addresses the problem of detecting signals occupying unknown degrees of…

信号处理 · 电气工程与系统科学 2026-01-21 Ali Rasteh , Sundeep Rangan

In order to detect unknown intrusions and runtime errors of computer programs, the cyber-security community has developed various detection techniques. Anomaly detection is an approach that is designed to profile the normal runtime behavior…

密码学与安全 · 计算机科学 2021-06-03 Byunggu Yu , Junwhan Kim

The complexity and ubiquity of modern computing systems is a fertile ground for anomalies, including security and privacy breaches. In this paper, we propose a new methodology that addresses the practical challenges to implement anomaly…

密码学与安全 · 计算机科学 2020-06-17 Charles F. Gonçalves , Daniel S. Menasché , Alberto Avritzer , Nuno Antunes , Marco Vieira

Anomaly detection in complex domains poses significant challenges due to the need for extensive labeled data and the inherently imbalanced nature of anomalous versus benign samples. Graph-based machine learning models have emerged as a…

机器学习 · 计算机科学 2025-07-21 Yifan Wei , Anwar Said , Waseem Abbas , Xenofon Koutsoukos

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

We propose a modified density estimation problem that is highly effective for detecting anomalies in tabular data. Our approach assumes that the density function is relatively stable (with lower variance) around normal samples. We have…

机器学习 · 计算机科学 2024-05-09 Amit Rozner , Barak Battash , Henry Li , Lior Wolf , Ofir Lindenbaum

Graph anomaly detection plays a vital role for identifying abnormal instances in complex networks. Despite advancements of methodology based on deep learning in recent years, existing benchmarking approaches exhibit limitations that hinder…

机器学习 · 计算机科学 2024-03-08 Jing Gu , Dongmian Zou

Anomaly detection is critical for the secure and reliable operation of industrial control systems. As our reliance on such complex cyber-physical systems grows, it becomes paramount to have automated methods for detecting anomalies,…

机器学习 · 计算机科学 2024-05-10 Mayra Macas , Chunming Wu , Walter Fuertes

Anomaly detection is the process of identifying atypical data samples that significantly deviate from the majority of the dataset. In the realm of clinical screening and diagnosis, detecting abnormalities in medical images holds great…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Xianyao Hu , Congming Jin

Use of an autoencoder (AE) as a normal model is a state-of-the-art technique for unsupervised-anomaly detection in sounds (ADS). The AE is trained to minimize the sample mean of the anomaly score of normal sounds in a mini-batch. One…

音频与语音处理 · 电气工程与系统科学 2019-07-22 Yuma Koizumi , Shoichiro Saito , Masataka Yamaguchi , Shin Murata , Noboru Harada

Detecting and characterizing decoherence-inducing noise sources is critical for developing robust quantum technologies and deploying quantum sensors operating at molecular scales. However, current noise spectroscopies rely on severe…

量子物理 · 物理学 2025-07-09 Nanako Shitara , Andrés Montoya-Castillo

Anomalies are strange data points; they usually represent an unusual occurrence. Anomaly detection is presented from the perspective of Wireless sensor networks. Different approaches have been taken in the past, as we will see, not only to…

机器学习 · 计算机科学 2017-08-30 Pelumi Oluwasanya

The average spectrum method is a promising approach for the analytic continuation of imaginary time or frequency data to the real axis. It determines the analytic continuation of noisy data from a functional average over all admissible…

强关联电子 · 物理学 2020-02-14 Khaldoon Ghanem , Erik Koch

Recent years have witnessed an upsurge of interest in the problem of anomaly detection on attributed networks due to its importance in both research and practice. Although various approaches have been proposed to solve this problem, two…

社会与信息网络 · 计算机科学 2022-12-16 Tianjin Huang , Yulong Pei , Vlado Menkovski , Mykola Pechenizkiy

The detection of unknown traffic obstacles is vital to ensure safe autonomous driving. The standard object-detection methods cannot identify unknown objects that are not included under predefined categories. This is because object-detection…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Chihiro Noguchi , Toshiaki Ohgushi , Masao Yamanaka

Traditional myoelectric pattern recognition (MPR) systems excel within controlled laboratory environments but they are interfered when confronted with anomaly or novel motions not encountered during the training phase. Utilizing metric ways…

信号处理 · 电气工程与系统科学 2024-06-26 ZongYe Hu , Ge Gao , Xiang Chen , Xu Zhang

Graph anomaly detection on attributed networks has become a prevalent research topic due to its broad applications in many influential domains. In real-world scenarios, nodes and edges in attributed networks usually display distinct…

社会与信息网络 · 计算机科学 2022-08-18 Shujie Yang , Binchi Zhang , Shangbin Feng , Zhaoxuan Tan , Qinghua Zheng , Jun Zhou , Minnan Luo

In the Internet of Things (IoT) devices are exposed to various kinds of attacks when connected to the Internet. An attack detection mechanism that understands the limitations of these severely resource-constrained devices is necessary. This…

密码学与安全 · 计算机科学 2017-01-25 Nidhi Rastogi , James Hendler