Fuzzy computations in risk and decision analysis

Dong, Weimin; Shah, Haresh C.; Wongt, F. S.

doi:10.1080/02630258508970407

Cited by 105 publications

(28 citation statements)

References 2 publications

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“…The calculation procedure of the model is complemented by the following methods: 1) the DSW algorithm -first developed by the team of Dong, Shah & Wong [9], later modified by the team of Givens & Tahani [10], which involves the implementation of the principle of fuzzy expansion in the context of performing basic arithmetic operations (addition, subtraction, multiplication and division); 2) the vertex method (VM), which eliminates errors that could occur during arithmetic operations on fuzzy numbers, particularly on their intervals after the decomposition of fuzzy sets; 3) one of the universal defuzzification methods, which can be effectively used regardless of the shape of the membership function of the resulting fuzzy set, that is, either the centre of gravity method (CoG) or the area compensation method (AC), in which the acute resulting value representing the fuzzy output set is the arithmetic average of the surface (A l i A r ) appointed by vertical axis μ(x) and left or right curve limiting the resulting fuzzy set, respectively.…”

Section: Algorithms and Methods Used In The Development Of The Modelmentioning

confidence: 99%

Quantification of the risk addition in life cycle cost of a building object

Plebankiewicz

Zima

Wieczorek

2017

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This paper focuses on the estimation of life cycle cost of buildings taking into account the influence of risk. The authors present a original model for the estimation of the life cycle cost of a building object which allows quantifying the degree of cost increase arising from the incurred and assessed risks. The operation of the model is demonstrated by a relevant example.Keywords: risk, building object, life cycle, life cycle cost, fuzzy sets Streszczenie W niniejszym artykule zwrócono uwagę na kwestie szacowania kosztów cyklu życia z uwzględnieniem wpływu ryzyka na ich wielkość. W pracy przedstawiono autorską koncepcję modelu szacowania kosztów cyklu życia obiektu budowlanego, dzięki któremu będzie można skwantyfikować wielkość dodatku za zaistniałe i ocenione ryzyko. Działanie modelu zobrazowano przykładem.Słowa kluczowe: ryzyko, obiekt budowlany, cykl życia, koszty cyklu życia, zbiory rozmyte 36

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Section: Algorithms and Methods Used In The Development Of The Modelmentioning

confidence: 99%

Quantification of the risk addition in life cycle cost of a building object

Plebankiewicz

Zima

Wieczorek

2017

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“…Risk is expressed in terms of fuzzy risk only when we study it by a fuzzy method. Some early related applications can be found in the literature (Brown, 1979;Clements, 1977;Dong et al, 1985;Esogbue et al, 1992;Hadipriono and Ross, 1991;Hoffman et al, 1978).…”

Section: Fuzzy Riskmentioning

confidence: 99%

Fuzzy approach to analysis of flood risk based on variable fuzzy sets and improved information diffusion methods

2013

Nat. Hazards Earth Syst. Sci.

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The predictive analysis of natural disasters and their consequences is challenging because of uncertainties and incomplete data. The present article studies the use of variable fuzzy sets (VFS) and improved information diffusion method (IIDM) to construct a composite method. The proposed method aims to integrate multiple factors and quantification of uncertainties within a consistent system for catastrophic risk assessment. The fuzzy methodology is proposed in the area of flood disaster risk assessment to improve probability estimation. The purpose of the current study is to establish a fuzzy model to evaluate flood risk with incomplete data sets. The results of the example indicate that the methodology is effective and practical; thus, it has the potential to forecast the flood risk in flood risk management

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“…The reader can find additional information on fuzzy arithmetic and alpha-cut methods in Dong et al (1985), Kaufmann and Gupta (1985), and Ross (2010).…”

Section: Appendixmentioning

confidence: 99%

“…The main ones are the Vertex and DSW methods (Ross 2010). The most suitable of these is the second one (DSW, from Dong, Shah, and Wong) (Dong et al 1985), based on performing interval operations with alpha-cuts. With this method, in order to operate two variables, it is necessary to calculate several Kyoto Protocol…”

Section: Foundationsmentioning

confidence: 99%

Fuzzy Method for Analysing Uncertainty in the Sustainable Design of Concrete Structures

Cano

Cruz

Gómez

et al. 2016

Journal of Civil Engineering and Management

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Abstract.The model presented here is based on fuzzy arithmetic techniques and the MIVES method, which is based, in turn, on requirement trees, value analysis and the Analytic Hierarchy Process. Even though it encompasses the approach for assessing sustainability adopted by the Spanish Structural Concrete Code (EHE), the model can also be applied to concrete structures designed according to other structural codes. The EHE model serves to estimate the Structure's Contribution to Sustainability Index (ICES) and constitutes the first sustainability model included in a structural code. The ICES crisp model is inadequate in terms of managing the structural sustainability objective of medium and high uncertainty projects. In such cases, a method not only has to assess the potential sustainability index at the end of the project, but also the degree of uncertainty affecting compliance with the sustainability objective laid down by the client or promoter. The paper compares this model with a Monte Carlo simulation method conceived for the same purpose. The fuzzy method could be a better solution in specific cases of limited time or budget for creating the model.

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Fuzzy computations in risk and decision analysis

Cited by 105 publications

References 2 publications

Quantification of the risk addition in life cycle cost of a building object

Quantification of the risk addition in life cycle cost of a building object

Fuzzy approach to analysis of flood risk based on variable fuzzy sets and improved information diffusion methods

Fuzzy Method for Analysing Uncertainty in the Sustainable Design of Concrete Structures

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