权重不确定条件下的绿色供应商群评价

Green supplier group evaluation under the condition of uncertain weight

为揭示权重难以精确获知条件下的绿色供应商群评价的基本原理,采用偏序集理论,给出了PROMETHEEⅡ模型的偏序集表示,分析了包含多个评价者的方案折衷排名方法,实例验证了绿色供应商的多准则群评价过程.研究结果表明:应用偏序集表示的PROMETHEEⅡ模型,结合定性的评价者偏好信息即可实现对绿色供应商的排序,根据各供应商的相对高度能够计算多个评价者的群折衷排序.研究结论突破了传统PROMETHEEⅡ模型评价需要精确权重的特点,有助于拓展PROMETHEEⅡ模型在绿色供应商选择领域的应用.

In order to reveal the basic principle of green supplier group evaluation under the condition that the weight is difficult to obtain accurately,the partial order set representation of PROMETHEE II model is given by using the partial order set theory,and the scheme compromise ranking method with multiple evaluators is analyzed.The example verifies the multi-criteria group evaluation process of green supplier.The results show that the green suppliers can be ranked by using the PROMETHEE II model represented by the poset and the qualitative preference information of the evaluators,and the group compromise ranking of multiple evaluators can be calculated according to the relative height of each supplier.The conclusion breaks through the characteristics that the traditional PROMETHEE II model needs accurate weight for evaluation,which helps to expand the application of PROMETHEE II model in the field of green supplier selection.