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Unsupervised anomaly detection and localization is a crucial task as it is impossible to collect and label all possible anomalies. Many studies have emphasized the importance of integrating local and global information to achieve accurate…

计算机视觉与模式识别 · 计算机科学 2025-04-03 E. Mathian , H. Liu , L. Fernandez-Cuesta , D. Samaras , M. Foll , L. Chen

To address the problem that traditional network traffic anomaly detection algorithms do not suffi-ciently mine potential features in long time domain, an anomaly detection method based on mul-ti-scale residual features of network traffic is…

网络与互联网体系结构 · 计算机科学 2022-05-10 Xueyuan Duan , Yu Fu , Kun Wang

Classifying time series data using neural networks is a challenging problem when the length of the data varies. Video object trajectories, which are key to many of the visual surveillance applications, are often found to be of varying…

计算机视觉与模式识别 · 计算机科学 2018-12-19 Santhosh Kelathodi Kumaran , Debi Prosad Dogra , Partha Pratim Roy , Adway Mitra

We present a novel end-to-end deep learning-based adaptation control algorithm for frequency-domain adaptive system identification. The proposed method exploits a deep neural network to map observed signal features to corresponding…

音频与语音处理 · 电气工程与系统科学 2022-03-07 Thomas Haubner , Andreas Brendel , Walter Kellermann

Anomaly detection techniques enable effective anomaly detection and diagnosis in multi-variate time series data, which are of major significance for today's industrial applications. However, establishing an anomaly detection system that can…

机器学习 · 计算机科学 2024-05-02 Lingrui Yu

Auto-encoder is a special kind of neural network based on reconstruction. De-noising auto-encoder (DAE) is an improved auto-encoder which is robust to the input by corrupting the original data first and then reconstructing the original…

机器学习 · 计算机科学 2014-04-24 Fu-qiang Chen , Yan Wu , Guo-dong Zhao , Jun-ming Zhang , Ming Zhu , Jing Bai

In this paper, we present two pipelines in order to reduce the feature space for anomaly detection using the One Class SVM. As a first stage of both pipelines, we compare the performance of three convolutional autoencoders. We use the PCA…

计算机视觉与模式识别 · 计算机科学 2023-05-01 Simon Bilik , Karel Horak

A Distributed Denial-of-service (DDoS) attack is a malicious attempt to disrupt the regular traffic of a targeted server, service, or network by sending a flood of traffic to overwhelm the target or its surrounding infrastructure. As…

密码学与安全 · 计算机科学 2023-05-17 Yuanyuan Wei , Julian Jang-Jaccard , Fariza Sabrina , Wen Xu , Seyit Camtepe , Aeryn Dunmore

Currently, digital security mechanisms like Anomaly Detection Systems using Autoencoders (AE) show great potential for bypassing problems intrinsic to the data, such as data imbalance. Because AE use a non-trivial and nonstandardized…

机器学习 · 计算机科学 2025-06-19 Luan Gonçalves Miranda , Pedro Ivo da Cruz , Murilo Bellezoni Loiola

End-to-end design of communication systems using deep autoencoders (AEs) is gaining attention due to its flexibility and excellent performance. Besides single-user transmission, AE-based design is recently explored in multi-user setup,…

信号处理 · 电气工程与系统科学 2023-06-26 Vukan Ninkovic , Dejan Vukobratovic , Adriano Pastore , Carles Anton-Haro

Anomaly detection in time series has been widely researched and has important practical applications. In recent years, anomaly detection algorithms are mostly based on deep-learning generative models and use the reconstruction error to…

机器学习 · 计算机科学 2020-10-15 Chunkai Zhang , Wei Zuo , Xuan Wang

In industry, machine anomalous sound detection (ASD) is in great demand. However, collecting enough abnormal samples is difficult due to the high cost, which boosts the rapid development of unsupervised ASD algorithms. Autoencoder (AE)…

声音 · 计算机科学 2023-11-16 Yifan Zhou , Dongxing Xu , Haoran Wei , Yanhua Long

Hacking and false data injection from adversaries can threaten power grids' everyday operations and cause significant economic loss. Anomaly detection in power grids aims to detect and discriminate anomalies caused by cyber attacks against…

机器学习 · 计算机科学 2023-03-14 Xijuan Sun , Di Wu , Arnaud Zinflou , Benoit Boulet

Advancements in deep learning techniques have given a boost to the performance of anomaly detection. However, real-world and safety-critical applications demand a level of transparency and reasoning beyond accuracy. The task of anomaly…

The advances in deep neural networks (DNN) have significantly enhanced real-time detection of anomalous data in IoT applications. However, the complexity-accuracy-delay dilemma persists: complex DNN models offer higher accuracy, but typical…

机器学习 · 计算机科学 2021-08-21 Mao V. Ngo , Tie Luo , Tony Q. S. Quek

Anomaly analytics is a popular and vital task in various research contexts, which has been studied for several decades. At the same time, deep learning has shown its capacity in solving many graph-based tasks like, node classification, link…

机器学习 · 计算机科学 2022-12-13 Jing Ren , Feng Xia , Azadeh Noori Hoshyar , Charu C. Aggarwal

In the context of skeleton-based action recognition, graph convolutional networks (GCNs) have been rapidly developed, whereas convolutional neural networks (CNNs) have received less attention. One reason is that CNNs are considered poor in…

计算机视觉与模式识别 · 计算机科学 2021-12-10 Kailin Xu , Fanfan Ye , Qiaoyong Zhong , Di Xie

A novel ``edge attention-based Convolutional Neural Network (CNN)'' is proposed in this research for object classification task. With the advent of advanced computing technology, CNN models have achieved to remarkable success, particularly…

计算机视觉与模式识别 · 计算机科学 2025-02-06 Santanu Roy , Ashvath Suresh , Archit Gupta

Anomaly detection (AD) plays a pivotal role in AI applications, e.g., in classification, and intrusion/threat detection in cybersecurity. However, most existing methods face challenges of heterogeneity amongst feature subsets posed by…

人工智能 · 计算机科学 2025-01-15 Phai Vu Dinh , Diep N. Nguyen , Dinh Thai Hoang , Quang Uy Nguyen , Eryk Dutkiewicz

In this paper, we proposed to investigate unsupervised anomaly detection in Synthetic Aperture Radar (SAR) images. Our approach considers anomalies as abnormal patterns that deviate from their surroundings but without any prior knowledge of…

计算机视觉与模式识别 · 计算机科学 2022-10-31 Max Muzeau , Chengfang Ren , Sébastien Angelliaume , Mihai Datcu , Jean-Philippe Ovarlez