基于区间数贴近度的水环境质量评价模型研究

针对基于区间数的水环境质量评价问题,提出了基于区间数贴近度的水质评价模型.首先讨论了区间数贴近度的定义,给出了求贴近度的具体公式.然后给出了水质评价模型的一般步骤,并通过实例验证了模型计算方法简单且能较完整地反映水环境质量污染程度,是一种合理实用的评价方法.同时分析了评价指标因子的赋权法,给出了一种基于等权赋权法和指数赋权法的几何平均组合赋权法.

A Study of Water Environment Quality Evaluation Model Based on Interval Number Closeness

With the problem of water environment quality evaluation based on interval numbers,this paper proposes a water environment quality evaluation model based on interval number closeness.We firstly discuss the definition of interval number closeness,and give the specific formulas seeking closeness.Then,the general steps of water quality evaluation model are proposed,and the model is verified that its calculation method is simple and can completely reflect the pollution degree of the water environment by an example,is a reasonable and practical evaluation method.At the same time,we analysis the weighting method for evaluation factors,give the geometric mean combined weighting method based on equal rights and index weighting method.