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Condition-based maintenance is becoming increasingly important in hydraulic systems. However, anomaly detection for these systems remains challenging, especially since that anomalous data is scarce and labeling such data is tedious and even…

机器学习 · 计算机科学 2024-11-05 Yongqi Dong , Kejia Chen , Zhiyuan Ma

With increasingly larger and more complex telecommunication networks, there is a need for improved monitoring and reliability. Requirements increase further when working with mission-critical systems requiring stable operations to meet…

网络与互联网体系结构 · 计算机科学 2024-08-28 Sean Doris , Iosif Salem , Stefan Schmid

This paper investigates the potential of non-terrestrial and terrestrial signals of opportunity (SOOP) for navigation applications. Non-terrestrial SOOP analysis employs modified Cram\`er-Rao lower bound (MCRLB) to establish a relationship…

信号处理 · 电气工程与系统科学 2024-07-24 Francesco Zanirato , Francesco Ardizzon , Laura Crosara , Alessio Curzio , Luca Canzian , Stefano Tomasin , Nicola Laurenti

Representing maritime traffic patterns and detecting anomalies from them are key to vessel monitoring and maritime situational awareness. We propose a novel approach -- referred to as GeoTrackNet -- for maritime anomaly detection from AIS…

机器学习 · 计算机科学 2021-02-12 Duong Nguyen , Rodolphe Vadaine , Guillaume Hajduch , René Garello , Ronan Fablet

Trans-Neptunian objects (TNOs) are small, icy bodies in the outer solar system. They are observed to have a complex orbital distribution that was shaped by the early dynamical history and migration of the giant planets. Comparisons between…

地球与行星天体物理 · 物理学 2024-05-09 Kathryn Volk , Renu Malhotra

Machine learning offers potential solutions to current issues in industrial systems in areas such as quality control and predictive maintenance, but also faces unique barriers in industrial applications. An ongoing challenge is extreme…

机器学习 · 计算机科学 2026-01-15 Lesley Wheat , Martin v. Mohrenschildt , Saeid Habibi

NOAA's Deep-ocean Assessment and Reporting of Tsunamis (DART) data are critical for NASA-JPL's tsunami detection, real-time operations, and oceanographic research. However, these time-series data often contain spikes, steps, and drifts that…

机器学习 · 计算机科学 2024-12-24 Kevin Lee

Underactuated systems like sea vessels have degrees of motion that are insufficiently matched by a set of independent actuation forces. In addition, the underlying trajectory-tracking control problems grow in complexity in order to decide…

系统与控制 · 电气工程与系统科学 2021-04-02 Mohammed Abouheaf , Wail Gueaieb , Md. Suruz Miah , Davide Spinello

In an era where maritime infrastructures are crucial, advanced situational awareness solutions are increasingly important. The use of optical camera systems can allow real-time usage of maritime footage. This thesis presents an…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Borja Carrillo Perez

The black box nature of deep learning models complicate their usage in critical applications such as remote sensing. Conformal prediction is a method to ensure trust in such scenarios. Subject to data exchangeability, conformal prediction…

机器学习 · 计算机科学 2024-05-07 Protim Bhattacharjee , Peter Jung

The detection of anomalies in real time is paramount to maintain performance and efficiency across a wide range of applications including web services and smart manufacturing. This paper presents a novel algorithm to detect anomalies in…

信号处理 · 电气工程与系统科学 2020-07-22 Caitríona M. Ryan , Andrew Parnell , Catherine Mahoney

Detecting early signs of failures (anomalies) in complex systems is one of the main goal of preventive maintenance. It allows in particular to avoid actual failures by (re)scheduling maintenance operations in a way that optimizes…

机器学习 · 统计学 2015-03-19 Tsirizo Rabenoro , Jérôme Lacaille , Marie Cottrell , Fabrice Rossi

In this paper we propose a novel machine-learning method for anomaly detection applicable to data with periodic characteristics where randomly varying period lengths are explicitly allowed. A multi-dimensional time series analysis is…

信号处理 · 电气工程与系统科学 2019-05-22 Lia Ahrens , Julian Ahrens , Hans D. Schotten

A method to rapidly estimate extreme ship response events is developed in this paper. The method involves training by a Long Short-Term Memory (LSTM) neural network to correct a lower-fidelity hydrodynamic model to the level of a…

机器学习 · 计算机科学 2025-03-28 Samuel J. Edwards , Michael D. Levine

We propose a systematic methodology to identify the topological phase transition through a self-supervised machine learning model, which is trained to correlate system parameters to the non-local observables in time-of-flight experiments of…

量子气体 · 物理学 2021-09-01 Chi-Ting Ho , Daw-Wei Wang

Monitoring turbulence parameters is crucial in high-angular resolution astronomy for various purposes, such as optimising adaptive optics systems or fringe trackers. The former are present at most modern observatories and will remain…

天体物理仪器与方法 · 物理学 2023-10-25 Nuno Morujão , Carlos Correia , Paulo Andrade , Julien Woillez , Paulo Garcia

In this paper, we propose a general framework to learn a robust large-margin binary classifier when corrupt measurements, called anomalies, caused by sensor failure might be present in the training set. The goal is to minimize the…

机器学习 · 计算机科学 2016-11-17 Tianpei Xie , Nasser M. Nasrabadi , Alfred O. Hero

Detecting orbital anomalies, such as maneuvers, atmospheric decay, and attitude upsets, across the rapidly growing population of low-Earth-orbit (LEO) satellites is a prerequisite for collision avoidance, decay forecasting, and conjunction…

分布式、并行与集群计算 · 计算机科学 2026-05-12 Yong Fu

Ship detection in remote sensing images plays a crucial role in various applications and has drawn increasing attention in recent years. However, existing arbitrary-oriented ship detection methods are generally developed on a set of…

计算机视觉与模式识别 · 计算机科学 2021-11-29 Feng Zhang , Xueying Wang , Shilin Zhou , Yingqian Wang , Yi Hou

Analysis of water and environmental data is an important aspect of many intelligent water and environmental system applications where inference from such analysis plays a significant role in decision making. Quite often these data that are…

机器学习 · 计算机科学 2020-12-16 Tochukwu John Anih , Chika Amadi Bede , Chima Festus Umeokpala