Abstract
In the previous chapter, the MIVES and MIVES – Monte Carlo methods were presented. MIVES is based on requirement trees, value functions, and the analytic hierarchy process. It helps integrate environmental, social, and economic sustainability indicators in a global sustainability index. Deterministic models can cause significant problems in terms of adequately managing the sustainability objective of a project. A method not only has to estimate the potential sustainability index at the end of the project. It also has to evaluate the degree of uncertainty that may make it difficult to achieve the sustainability objective. The MIVES – Monte Carlo method employs simulation to solve this problem. This chapter presents an alternative method, based on MIVES and fuzzy arithmetic. Different defuzzification parameters are proposed. An example of potential application related to heating and air conditioning systems in residential buildings is put forward. The advantages and drawbacks of using both methods are summarized.
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