Department of Industrial Engineering Q3 , Universidad de la Costa CUC, Barranquilla, Colombia School of Applied Sciences, Trakya University, Edirne, Turkey Department of Industrial Engineering, Corporación Universitaria Reformada CUR, Barranquilla, Colombia Correspondence Miguel A. Ortiz Barrios, Department of Industrial Engineering, Barranquilla, Universidad de la Costa CUC, Calle 58 #55– 66, Barranquilla 080003, Colombia. Email: mortiz1@cuc.edu.co Abstract Supplier selection is an important process for companies in the plastic sector due to its influence on firm performance and competitiveness. For a proper selection, a number of criteria from different aspects need to be considered by decision makers. Yet, as in different fields, because there are numerous criteria and alternatives to be considered in the plastic industry, choosing an appropriate multicriteria decision‐making approach has become a critical step for selecting suppliers. Therefore, the aim of this research is to define the most suitable supplier of high‐density polyethylene through the integration of powerful multicriteria decision‐making methods. For this purpose, the fuzzy analytic hierarchy process (FAHP) is initially applied to define initial weights of factors and subfactors under uncertainty, followed by the use of decision‐making trial and evaluation laboratory (DEMATEL) to evaluate interrelations between the elements of the hierarchy. Then, after combining FAHP and DEMATEL to calculate the final contributions of both factors and subfactors on the basis of interdependence, the technique for order of preference by similarity to ideal solution is used to assess the supplier alternatives. In addition, this paper also explores the differences between the judgments of decision makers for both AHP and DEMATEL methods. To do these, a case study is presented to demonstrate the validity of the proposed approach.

中文翻译：

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选择高密度聚乙烯供应商的战略混合方法

哥伦比亚大学巴兰基亚分校，哥斯达黎加国立大学工业工程系，哥伦比亚，土耳其，埃迪尔内，特拉基亚大学应用科学学院，工业工程系，哥伦比亚巴兰基亚，西班牙改革大学CUR，工业工程系通讯员Miguel A. Ortiz Barrios ，巴兰基亚，哥斯达黎加CUC大学，Calle 58＃55-66，巴兰基亚080003，哥伦比亚。电子邮件：mortiz1@cuc.edu.co摘要由于塑料供应商对公司绩效和竞争力的影响，选择供应商对于塑料行业的公司来说是重要的过程。为了进行适当的选择，决策者需要考虑许多不同方面的标准。但是，就像在不同领域一样，由于塑料行业中有许多标准和替代方案需要考虑，选择合适的多准则决策方法已成为选择供应商的关键步骤。因此，本研究的目的是通过集成强大的多准则决策方法来确定最适合的高密度聚乙烯供应商。为此，首先应用模糊分析层次过程（FAHP）来确定不确定性下因素和子因素的初始权重，然后使用决策试验和评估实验室（DEMATEL）评估层次元素之间的相互关系。 。然后，在将FAHP和DEMATEL结合起来以基于相互依赖关系计算因素和子因素的最终贡献之后，通过与理想解决方案相似的偏好顺序技术来评估供应商的选择方案。此外，本文还探讨了决策者对AHP方法和DEMATEL方法的判断之间的差异。为此，将提供一个案例研究来证明所提出方法的有效性。