“…There are several MCDM methods available, such as the analytic hierarchy process (AHP) method, the outranking method, and the technique for order preference by similarity to ideal solution (TOPSIS) method. Su et al applied AHP to evaluate five fly ash management alternatives in Taipei City, Taiwan, while considering the environmental, economic, social, management, and technological aspects [64]. Su et al also applied the TOPSIS method to evaluate four waste reduction policies in Taoyuan County, Taiwan, while considering environmental, administrative, economic, and social aspects [65].…”