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Time-of-flight (ToF) distance measurement devices such as ultrasonics, LiDAR and radar are widely used in autonomous vehicles for environmental perception, navigation and assisted braking control. Despite their relative importance in making…

系统与控制 · 电气工程与系统科学 2022-12-16 Martin Higgins , Devki Jha , David Wallom

Anomaly detection is a critical task in data mining and management with applications spanning fraud detection, network security, and log monitoring. Despite extensive research, existing unsupervised anomaly detection methods still face…

机器学习 · 计算机科学 2025-10-16 Yang Cao , Sikun Yang , Hao Tian , Kai He , Lianyong Qi , Ming Liu , Yujiu Yang

Anomaly detection aims to distinguish abnormal instances that deviate significantly from the majority of benign ones. As instances that appear in the real world are naturally connected and can be represented with graphs, graph neural…

We develop a supervised machine learning model that detects anomalies in systems in real time. Our model processes unbounded streams of data into time series which then form the basis of a low-latency anomaly detection model. Moreover, we…

机器学习 · 计算机科学 2016-11-16 Derek Farren , Thai Pham , Marco Alban-Hidalgo

Due to the limited availability of anomalous samples for training, video anomaly detection is commonly viewed as a one-class classification problem. Many prevalent methods investigate the reconstruction difference produced by AutoEncoders…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Xiangyu Huang , Caidan Zhao , Chenxing Gao , Lvdong Chen , Zhiqiang Wu

Anomaly subsequence detection is to detect inconsistent data, which always contains important information, among time series. Due to the high dimensionality of the time series, traditional anomaly detection often requires a large time…

机器学习 · 计算机科学 2019-07-02 Chunkai Zhang , Yingyang Chen , Ao Yin

In this paper, we introduce Masked Anomaly Detection (MAD), a general self-supervised learning task for multivariate time series anomaly detection. With the increasing availability of sensor data from industrial systems, being able to…

机器学习 · 计算机科学 2022-10-04 Yiwei Fu , Feng Xue

Low rank tensor representation (LRTR) methods are very useful for hyperspectral anomaly detection (HAD). To overcome the limitations that they often overlook spectral anomaly and rely on large-scale matrix singular value decomposition, we…

计算机视觉与模式识别 · 计算机科学 2025-03-10 Quan Yu , Yu-Hong Dai , Minru Bai

Deep learning methods have shown promising performance in fault diagnosis for multimode process. Most existing studies assume that the collected health state categories from different operating modes are identical. However, in real…

机器学习 · 计算机科学 2025-10-30 Guangqiang Li , M. Amine Atoui , Xiangshun Li

Anomaly detection in time-series data is crucial for identifying faults, failures, threats, and outliers across a range of applications. Recently, deep learning techniques have been applied to this topic, but they often struggle in…

机器学习 · 计算机科学 2024-01-23 Lixu Wang , Shichao Xu , Xinyu Du , Qi Zhu

We propose an unsupervised adaptation framework, Self-TAught Recognizer (STAR), which leverages unlabeled data to enhance the robustness of automatic speech recognition (ASR) systems in diverse target domains, such as noise and accents.…

计算与语言 · 计算机科学 2024-05-24 Yuchen Hu , Chen Chen , Chao-Han Huck Yang , Chengwei Qin , Pin-Yu Chen , Eng Siong Chng , Chao Zhang

Low-count time series describe sparse or intermittent events, which are prevalent in large-scale online platforms that capture and monitor diverse data types. Several distinct challenges surface when modelling low-count time series,…

机器学习 · 计算机科学 2023-11-21 Philipp Renz , Kurt Cutajar , Niall Twomey , Gavin K. C. Cheung , Hanting Xie

Reliable evaluation of anomaly detection methods in multivariate time series remains an open challenge, largely due to the limitations of existing benchmark datasets. Current resources often lack fine-grained anomaly annotations, do not…

人工智能 · 计算机科学 2026-04-17 Pierre Lotte , André Péninou , Olivier Teste

Time series anomaly detection (TSAD) is an important data mining task with numerous applications in the IoT era. In recent years, a large number of deep neural network-based methods have been proposed, demonstrating significantly better…

机器学习 · 计算机科学 2022-08-04 Wenkai Li , Cheng Feng , Ting Chen , Jun Zhu

Anomaly inspection plays a vital role in industrial manufacturing, but the scarcity of anomaly samples significantly limits the effectiveness of existing methods in tasks such as localization and classification. While several anomaly…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Yilin Lu , Jianghang Lin , Linhuang Xie , Kai Zhao , Yansong Qu , Shengchuan Zhang , Liujuan Cao , Rongrong Ji

Semi-supervised graph anomaly detection (GAD) has recently received increasing attention, which aims to distinguish anomalous patterns from graphs under the guidance of a moderate amount of labeled data and a large volume of unlabeled data.…

机器学习 · 计算机科学 2025-03-18 Jiazhen Chen , Sichao Fu , Zheng Ma , Mingbin Feng , Tony S. Wirjanto , Qinmu Peng

Modern software systems have become increasingly complex, which makes them difficult to test and validate. Detecting software partial anomalies in complex systems at runtime can assist with handling unintended software behaviors, avoiding…

软件工程 · 计算机科学 2022-04-27 Shiyi Kong , Jun Ai , Minyan Lu , Shuguang Wang , W. Eric Wong

Scene Text Editing (STE) is a challenging research problem, that primarily aims towards modifying existing texts in an image while preserving the background and the font style of the original text. Despite its utility in numerous real-world…

计算机视觉与模式识别 · 计算机科学 2024-11-06 Alloy Das , Sanket Biswas , Prasun Roy , Subhankar Ghosh , Umapada Pal , Michael Blumenstein , Josep Lladós , Saumik Bhattacharya

Time series anomaly detection is extensively studied in statistics, economics, and computer science. Over the years, numerous methods have been proposed for time series anomaly detection using deep learning-based methods. Many of these…

机器学习 · 计算机科学 2022-08-25 Shahroz Tariq , Binh M. Le , Simon S. Woo

Time series anomaly detection is critical for maintaining the reliability of mission-critical systems. While Transformer-based models like PatchTST have shown remarkable performance, their $\mathcal{O}(L^2)$ computational complexity…

机器学习 · 计算机科学 2026-05-28 Tae-Gyun Lee , Junyoung Park , Kyu Won Han