基于三标度法的模糊物元模型在湖泊水质评价中的应用

在模糊物元分析原理的基础上,结合水质评价的特点和海明贴近度的概念,提出了三标度法的模糊物元分析方法.在对水质进行综合评价时,把水质的分类等级作为物元的事物,以它们的各项评价指标及其相应的模糊量值构造复合模糊物元,通过计算与理想模糊物元之间的海明贴近度,实现对水样水质的等级评价和水样排序.在指标权重的确定上选取三标度法,使评分方法与决策者的语言习惯相一致,令构造出的判断矩阵更加直观准确.研究结果说明:该模糊物元模型简便、通用,计算结果较为客观和稳定,为水质综合评价提供了新的有效方法.

Application of Fuzzy Matter-element Model Based on Three-mark Method in the Evaluation of Water Quality of Lake

Based on the analysis theory of fuzzy matter-element,combining with the characteristic of water quality evaluation and the concept of Hamming approach degree,the fuzzy matter-element analysis model based on three-mark method was put forward in this paper.Regarding the water quality level as the objects of matter-element,constructing the compound fuzzy matter-element through various evaluation indexes and corresponding fuzzy value,the water quality evaluation and arrangement was achieved through calculating Hamming approach degree between the fuzzy matter-element and the standard(the best) fuzzy matter-element.This paper selected three-mark method,which can greatly meet custom of decision-maker,for the decision of index weight to make the estimation matrix more intuitionistic and correct.The effect of application indicated that the model was convenient,accurate,had objective and stable calculation result,and provided a new effective method for the comprehension evaluation of water quality.