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.
出处
《山东大学学报（工学版）》
CAS
2008年第3期40-45,共6页
Journal of Shandong University（Engineering Science）
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
comprehensive evaluation of water quality
variable fuzzy sets
index weights
Dongchang Lake
features of classification
