MCDM Approach for Flood Vulnerability Assessment using TOPSIS Method with α Cut Level Sets

Abstract

This study aims to develop a multiple criteria decision making (MCDM) approach for flood vulnerability assessment which considers uncertainty. The flood vulnerability assessment procedure consists of three steps: (1) use the Delphi process to determine the criteria and their corresponding weights-the adopted criteria represent the social, economic, and environmental circumstances related to floods, (2) construct a fuzzy data matrix for the flood vulnerability criteria using fuzzification and standardization, and (3) set priorities based on the number of assessed vulnerabilities. This study uses a modified fuzzy TOPSIS method based on α-level sets which considers various uncertainties related to weight derivation and crisp data aggregation. Further, Spearman's rank correlation analysis is used to compare the rankings obtained using the proposed method with those obtained using fuzzy TOPSIS with fuzzy data, TOPSIS, and WSM methods with crisp data. The fuzzy TOPSIS method based on α-cut level sets is found to have a higher correlation rate than the other methods, and thus, it can reduce the difference of the rankings which uses crisp and fuzzy data. Thus, the proposed flood vulnerability assessment method can effectively support flood management policies.

Determining Maintenance Project Priority Based on Disaster Risk Assessment: Case of TOPSIS Applications

“…대표적인 다기준 의사결정기법인 TOPSIS 기법은 대안과 이상해, 부이상해간의 거리를 계산하여 순위를 도출하는 합리적인 접근법으로 최근 다양한 다기준 의사결정 문제에 적용되고 있다 (Hwang and Yoon, 1981;Shiha et al, 2007). TOPSIS는 각 요소간의 상대적 근접거리를 통해 이상해를 도출하는데 다양한 의사결정문제에 활용되는 것으로 활용 되고 있다 (Lee et al, 2013). 이 방법은 우선순위선정과 관련 된 연구가 풍부한 만큼, 이론의 우수성 및 적용의 안정성에 신뢰성을 가지고 있다.…”

Multi-Layer Attack Graph Analysis in the 5G Edge Network Using a Dynamic Hexagonal Fuzzy Method

“…A few approaches used the TOPSIS method in the cybersecurity domain. For example, Ansari et al [ 46 ] used the Triangular Fuzzy Number TOPSIS approach to select the most suitable security requirements for quality and trustworthy software development based on the security expert’s knowledge and experience. Gyumin et al [ 47 ] developed an MCDM approach for flood vulnerability assessment which considers uncertainty.…”