基于灰色关联度的改进TOPSIS模型在水质评价中的应用

摘要

Based on grey correlation grade,we creatively proposed a new improved algorithm by integrating the Euclidean distance analysis method and the grey correlation grade into the improved TOPSIS model.This algorithm can not only reflect the distance to the ideal solution but also take the shape of the similarity into account.Moreover,Delphi and entropy weight method are utilized to calculate the combination entropy weight for avoiding the lack of subj ective and obj ective empowerments.And the application of our improved TOPSIS model to the comprehensive evaluation of water quality in the lower reaches of the Yellow River shows satisfactory results so as to demonstrate that the new model is practical and effective.%将欧几里得距离分析法、灰色关联度嵌入到 TOPSIS 模型中,建立基于灰色关联度的改进TOPSIS模型,提出一种新的相对贴近度改进算法,不仅能反映方案与理想解距离上的接近程度而且还考虑形状上的相似关系;同时采用组合赋权法计算评价指标的权重,克服了主、客观单独赋权的不足.将建立的改进TOPSIS模型应用到黄河下游水质综合评价中,结果表明该模型具有良好的实用性和有效性.