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Chinese Journal of Management Science ›› 2026, Vol. 34 ›› Issue (1): 268-281.doi: 10.16381/j.cnki.issn1003-207x.2023.2025

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Risk Assessment Model Construction of Urban Rainstorm Cascading Events Based on Risk Feature Tracing

Zhaoge Liu1,4(), Xiangyang Li2, Xiaohan Zhu3   

  1. 1.School of Public Affairs,Xiamen University,Xiamen 361005,China
    2.School of Management,Harbin Institute of Technology,Harbin 150001,China
    3.Administrative Committee of Wuhan East Lake High-tech Development Zone,Wuhan 430075,China
    4.Center for Emergency Management Research,Xiamen University,Xiamen 361005,China
  • Received:2023-12-04 Revised:2024-04-05 Online:2026-01-25 Published:2026-01-29
  • Contact: Zhaoge Liu E-mail:zhaogeliu@xmu.edu.cn

Abstract:

Urban rainstorm disasters can easily induce large-scale, small-size, differentiated cascading events (urban rainstorm cascading events, URCE) such as damage to infrastructure and residents being trapped, etc. Disaster prevention urgently needs comprehensive and accurate assessment of the risks of different types of URCEs, but it faces the model performance constraints caused by sample data risk feature incompleteness. The comprehensive description of URCE risk features in historical cases is considered, and a risk assessment model construction method is proposed based on tracing back risk features. This method follows the basic idea of seeking “causes” from “effects”, uses case-based reasoning to trace risk features from historical cases with the connection of risk scenario descriptions, and then uses machine learning methods to learn the association between risk features and URCE risk categories, thus completing the adaptive construction of risk assessment models. The case study results of risk assessment for 6 typical URCE risks in Wuhan show that: the proposed method helps to solve the problem of incomplete features in constructing risk assessment models by tracing risk features based on cases, thus improving the accuracy of risk assessment. It also has good effects in distinguishing risks and small sample modeling. Compared with traditional comprehensive evaluation, damage curve and other methods, the proposed method has significant advantages in constructing small-grained, complex event coupled risk assessment models, which better meets the goal of accurate management of complex risks.

Key words: urban rainstorms, rainstorm cascading events, risk assessment model construction, risk features tracing, case-based reasoning

CLC Number: