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Structural health monitoring by a novel probabilistic machine learning method based on extreme value theory and mixture quantile modeling
Sarmadi, Hassan1,2; Yuen, Ka Veng3,4
2022-07-01
Source PublicationMechanical Systems and Signal Processing
ISSN0888-3270
Volume173
Abstract

This article proposes a novel probabilistic machine learning method based on unsupervised novelty detection for health monitoring of civil structures. The core of this method is based on extreme value theory (EVT) and mixture quantile modeling. Accordingly, a mixture quantile value by combining non-parametric and parametric quantile estimators is proposed as a new decision-making or novelty score. The non-parametric estimator relies on an empirical quantile function, while the parametric estimator stems from modeling a generalized extreme value distribution. Generally, the proposed method is composed of some main steps; that is, calculating distances between feature samples, sorting the distances in ascending order, changing their signs for providing negated quantities, selecting some negated maximum distances or extreme values in an iterative algorithm by using a goodness-of-fit test based on Kullback-Leibler information, and computing a mixture quantile. Furthermore, an EVT-based approach is proposed to estimate an alarming threshold. The major innovation in this article is to develop a novel probabilistic novelty detector with a new score for decision-making. The advantages of the proposed method contain preparing discriminative novelty scores for damage detection, dealing with the major challenge of environmental and/or operational variability, estimating a reliable threshold, and implementing both the procedures of decision-making and threshold estimation within a single framework. Dynamic and statistical features of two full-scale bridge structures are utilized to validate the proposed method along with comparative studies. Results demonstrate that the method is a reliable and influential tool for health monitoring of civil structures under varying various environmental and/or operational conditions.

KeywordGeneralized Extreme Value Machine Learning Mixture Quantile Probabilistic Anomaly Detection Structural Health Monitoring Threshold Estimation
DOI10.1016/j.ymssp.2022.109049
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
WOS IDWOS:000821103300003
Scopus ID2-s2.0-85126712452
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Cited Times [WOS]:10   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorYuen, Ka Veng
Affiliation1.Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
2.Head of Research and Development, IPESFP Company, Mashhad, Iran
3.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macao
4.Guangdong-Hong Kong-Macau Joint Laboratory for Smart Cities, University of Macau, 999078, Macao
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Sarmadi, Hassan,Yuen, Ka Veng. Structural health monitoring by a novel probabilistic machine learning method based on extreme value theory and mixture quantile modeling[J]. Mechanical Systems and Signal Processing,2022,173.
APA Sarmadi, Hassan,&Yuen, Ka Veng.(2022).Structural health monitoring by a novel probabilistic machine learning method based on extreme value theory and mixture quantile modeling.Mechanical Systems and Signal Processing,173.
MLA Sarmadi, Hassan,et al."Structural health monitoring by a novel probabilistic machine learning method based on extreme value theory and mixture quantile modeling".Mechanical Systems and Signal Processing 173(2022).
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