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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

Autoencoder (AEC) networks have recently emerged as a promising approach to perform unsupervised hyperspectral unmixing (HU) by associating the latent representations with the abundances, the decoder with the mixing model and the encoder…

信号处理 · 电气工程与系统科学 2022-02-16 Haoqing Li , Ricardo Augusto Borsoi , Tales Imbiriba , Pau Closas , José Carlos Moreira Bermudez , Deniz Erdoğmuş

In one-class novelty detection, a model learns solely on the in-class data to single out out-class instances. Autoencoder (AE) variants aim to compactly model the in-class data to reconstruct it exclusively, thus differentiating the…

机器学习 · 计算机科学 2022-07-25 Jaewoo Park , Yoon Gyo Jung , Andrew Beng Jin Teoh

Anomaly detection in high-energy physics is essential for identifying new physics beyond the Standard Model. Autoencoders provide a signal-agnostic approach but are limited by the topology of their latent space. This work explores…

高能物理 - 唯象学 · 物理学 2025-02-17 Vishal S. Ngairangbam , Błażej Rozwoda , Kazuki Sakurai , Michael Spannowsky

Human drivers can recognise fast abnormal driving situations to avoid accidents. Similar to humans, automated vehicles are supposed to perform anomaly detection. In this work, we propose the spatio-temporal graph auto-encoder for learning…

机器人学 · 计算机科学 2021-10-29 Julian Wiederer , Arij Bouazizi , Marco Troina , Ulrich Kressel , Vasileios Belagiannis

Efficient anomaly detection and diagnosis in multivariate time-series data is of great importance for modern industrial applications. However, building a system that is able to quickly and accurately pinpoint anomalous observations is a…

机器学习 · 计算机科学 2022-05-17 Shreshth Tuli , Giuliano Casale , Nicholas R. Jennings

Simultaneous recordings from thousands of neurons across multiple brain areas reveal rich mixtures of activity that are shared between regions and dynamics that are unique to each region. Existing alignment or multi-view methods neglect…

In classification problems, supervised machine-learning methods outperform traditional algorithms, thanks to the ability of neural networks to learn complex patterns. However, in two-class classification tasks like anomaly or fraud…

机器学习 · 计算机科学 2022-04-01 Mihai-Cezar Augustin , Vivien Bonvin , Regis Houssou , Efstratios Rappos , Stephan Robert-Nicoud

Tax risk supervision has become a critical component of modern financial governance, as irregular tax behaviors and hidden compliance risks pose significant challenges to regulatory authorities and enterprises alike. Traditional rule-based…

计算工程、金融与科学 · 计算机科学 2025-09-30 Zhenzhen Song , Nanxi Wang , Hongji Li

Anomaly detection is referred to as a process in which the aim is to detect data points that follow a different pattern from the majority of data points. Anomaly detection methods suffer from several well-known challenges that hinder their…

机器学习 · 计算机科学 2021-08-31 Kasra Babaei , Zhi Yuan Chen , Tomas Maul

Scene text recognition has attracted particular research interest because it is a very challenging problem and has various applications. The most cutting-edge methods are attentional encoder-decoder frameworks that learn the alignment…

计算机视觉与模式识别 · 计算机科学 2019-08-27 Xiaoxue Chen , Tianwei Wang , Yuanzhi Zhu , Lianwen Jin , Canjie Luo

The growing adoption of IoT systems in industries like transportation, banking, healthcare, and smart energy has increased reliance on sensor networks. However, anomalies in sensor readings can undermine system reliability, making real-time…

信号处理 · 电气工程与系统科学 2025-06-02 Tanish Baranwal , Arnab Das , Srihari Varada , Santanu Das , Mohammad R. Haider

We investigate a novel approach to time-series modeling, inspired by the successes of large pretrained foundation models. We introduce FAE (Foundation Auto-Encoders), a foundation generative-AI model for anomaly detection in time-series…

机器学习 · 计算机科学 2025-07-03 Gastón García González , Pedro Casas , Emilio Martínez , Alicia Fernández

Event time series are sequences of discrete events occurring at irregular time intervals, each associated with a domain-specific observational modality. They are common in domains such as high-energy astrophysics, computational social…

机器学习 · 计算机科学 2025-10-14 Steven Dillmann , Juan Rafael Martínez-Galarza

This paper proposes a method for detecting anomalies in video data. A Variational Autoencoder (VAE) is used for reducing the dimensionality of video frames, generating latent space information that is comparable to low-dimensional sensory…

计算机视觉与模式识别 · 计算机科学 2020-03-18 Giulia Slavic , Damian Campo , Mohamad Baydoun , Pablo Marin , David Martin , Lucio Marcenaro , Carlo Regazzoni

This paper looks into the problem of detecting network anomalies by analyzing NetFlow records. While many previous works have used statistical models and machine learning techniques in a supervised way, such solutions have the limitations…

机器学习 · 计算机科学 2019-03-18 Quoc Phong Nguyen , Kar Wai Lim , Dinil Mon Divakaran , Kian Hsiang Low , Mun Choon Chan

Anomaly detection is an important problem with applications in various domains such as fraud detection, pattern recognition or medical diagnosis. Several algorithms have been introduced using classical computing approaches. However, using…

机器学习 · 计算机科学 2024-10-10 Robin Frehner , Kurt Stockinger

Auditory attention detection (AAD) aims to detect the target speaker in a multi-talker environment from brain signals, such as electroencephalography (EEG), which has made great progress. However, most AAD methods solely utilize attention…

人机交互 · 计算机科学 2025-05-22 Lu Li , Cunhang Fan , Hongyu Zhang , Jingjing Zhang , Xiaoke Yang , Jian Zhou , Zhao Lv

Image change detection (ICD) to detect changed objects in front of a vehicle with respect to a place-specific background model using an on-board monocular vision system is a fundamental problem in intelligent vehicle (IV). From the…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Yamaguchi Kousuke , Tanaka Kanji , Sugimoto Takuma , Ide Rino , Takeda Koji

We propose a completely unsupervised pixel-wise anomaly detection method for hyperspectral images. The proposed method consists of three steps called data preparation, reconstruction, and detection. In the data preparation step, we apply a…

图像与视频处理 · 电气工程与系统科学 2021-01-25 Sertac Arisoy , Nasser M. Nasrabadi , Koray Kayabol