基于集对分析的河流水质综合指数评价模型

Research on comprehensive index assessment model of river water quality based on set pair analysis theory

文章基于河流水环境系统具有的模糊性和随机性,将模糊逻辑理论与集对分析理论耦合,结合集对分析理论的同一性、差异性和对立性,构建水质综合指数评价的集对分析模型。根据该模型,利用某河段水质资料计算出属性识别的水质等级识别结果及综合评价结果对各等级的隶属度。研究表明,评价结果精确、可信,在已知的各类系统综合评价问题中具有一定的应用价值。

Based on the characteristics of fuzziness and impreciseness of river water system, the set pair analysis model for evaluating water quality of the river mainstream is established. The method couples the fuzzy logic theory with set pair analysis theory, and integrates the identity, discrepancy and con- trary of the set pair analysis theory. According to this model, the water level recognition results and the membership of various levels are calculated by using the water quality data of a river. The result shows that the evaluation result is accurate and credible. It is valuable for the comprehensive evalua- tion of river water qualitv.