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    Multisource Data Integration and Computer Vision Technology in Uncertainty Quantification of Live Loads

    Source: Journal of Computing in Civil Engineering:;2025:;Volume ( 039 ):;issue: 001::page 04024046-1
    Author:
    Chi Xu
    ,
    Jun Chen
    ,
    Jie Li
    DOI: 10.1061/JCCEE5.CPENG-6005
    Publisher: American Society of Civil Engineers
    Abstract: Quantifying the uncertainty of live loads holds a significant reference value for reliability assessments at the component, structural, and even urban levels. Traditional survey methods are characterized by high survey costs, substantial manpower requirements, long implementation periods, and slow data updates. To address these shortcomings, this study proposes a new survey method that integrates heterogeneous data from various sources such as real estate and e-commerce websites, including photos of the surveyed region, object weights within the region, ownership change history, and so on. An object detection model is established using the You Only Look Once (YOLO) v4 algorithm. The model achieves mean average precision of 76% on the test data set and is applied to automatically identify object quantities from photos of the surveyed region. The feasibility and accuracy of the proposed method are verified through an illustrative survey example. Subsequently, this new method is applied to a large-scale survey in Shanghai, China, covering around 300,000  m2. Through the analysis of survey results, it was found that significant variations exist in the statistical outcomes between different districts within the same city. Specifically, the differences in statistical results for the load amplitude and change interval can reach 65% and 36%, respectively.
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      Multisource Data Integration and Computer Vision Technology in Uncertainty Quantification of Live Loads

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4304990
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    contributor authorChi Xu
    contributor authorJun Chen
    contributor authorJie Li
    date accessioned2025-04-20T10:34:44Z
    date available2025-04-20T10:34:44Z
    date copyright10/7/2024 12:00:00 AM
    date issued2025
    identifier otherJCCEE5.CPENG-6005.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4304990
    description abstractQuantifying the uncertainty of live loads holds a significant reference value for reliability assessments at the component, structural, and even urban levels. Traditional survey methods are characterized by high survey costs, substantial manpower requirements, long implementation periods, and slow data updates. To address these shortcomings, this study proposes a new survey method that integrates heterogeneous data from various sources such as real estate and e-commerce websites, including photos of the surveyed region, object weights within the region, ownership change history, and so on. An object detection model is established using the You Only Look Once (YOLO) v4 algorithm. The model achieves mean average precision of 76% on the test data set and is applied to automatically identify object quantities from photos of the surveyed region. The feasibility and accuracy of the proposed method are verified through an illustrative survey example. Subsequently, this new method is applied to a large-scale survey in Shanghai, China, covering around 300,000  m2. Through the analysis of survey results, it was found that significant variations exist in the statistical outcomes between different districts within the same city. Specifically, the differences in statistical results for the load amplitude and change interval can reach 65% and 36%, respectively.
    publisherAmerican Society of Civil Engineers
    titleMultisource Data Integration and Computer Vision Technology in Uncertainty Quantification of Live Loads
    typeJournal Article
    journal volume39
    journal issue1
    journal titleJournal of Computing in Civil Engineering
    identifier doi10.1061/JCCEE5.CPENG-6005
    journal fristpage04024046-1
    journal lastpage04024046-14
    page14
    treeJournal of Computing in Civil Engineering:;2025:;Volume ( 039 ):;issue: 001
    contenttypeFulltext
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