水质综合评价的模糊可变模型及其应用  

The application of the variable fuzzy model in comprehension evaluation of water quality

作　　者：许文杰[1] 曹升乐[2] 

机构地区：[1]大连理工大学土木水利学院 [2]山东大学土建与水利学院,山东济南250061

出　　处：《山东大学学报（工学版）》2008年第3期40-45,共6页Journal of Shandong University（Engineering Science）

摘　　要：水质综合评价是一个涉及多指标、多级别、考虑区间值的模糊评价问题,将模糊可变集理论引入其中,在评价数学模型不变的前提下,用熵值法、等权法和单纯阈值法3种方法确定指标权重,并以东昌湖为例,分析了各方法对应的级别特征值的稳定性,最终确定各样本的评价等级,结果表明模型的合理性和实用性.Considering that comprehensive evaluation of water quality involves many indexes, many classifications and interval values, variable fuzzy sets theory is applied. Based on the premise that the same mathematics model is used, index weights are determined by means of the entropy value method, equal weight method and pure threshold value method. The application of this model in Dongchang Lake was given as an example. The stability of features of classification corresponding to each method was analyzed, and the grade of each sample was determined. The Calculation result indicates that this proposed model is reasonable and practical.

关 键 词：水质综合评价 模糊可变集 指标权重 东昌湖 级别特征值 

分 类 号：P641.8[天文地球—地质矿产勘探]