基于改进熵权-G1-博弈论法的灌区运行状况综合评价

为了体现各指标对灌区评估的重要性,对各指标赋予不同的权重来体现其重要性的差别,而且综合评价结果的准确性也取决于指标权重赋值的合理性.运用G1法对评估指标进行主观赋权,采用改进熵权法对指标进行客观赋权,这样既满足所得权重的客观性,也能保证评估结果具有一定的解释性,然后采用博弈论的综合赋权法综合主观和客观权重,从而得到各指标的综合权重.运用确定的综合权重以改进线性模型对陕西省大型自流渠灌区洛惠渠进行实例验证,计算结果与可拓评价法结果基本一致,随着时间的推移,洛惠渠灌区评价级别从中等逐渐变为良好,运行状况越来越好,这符合洛惠渠灌区的发展实际.

Comprehensive evaluation of irrigation district operational status based on improved entropy weight-G1-game theory method

In order to reflect the importance of each index to evaluating irrigation areas, each index is endowed with the different weights to reflect the difference of its importance, and the accuracy of the comprehensive evaluation result also depends on the rationality of the index weight assignment. The G1 method is applied to subjective empowerment of evaluation index and the improved entropy method is applied to weight of indicators so as to meet the objectivity of the weight and guarantee that the assessment result has a certain explanation. Then the integrated method of game theory is adpted to integrate subjective and objective weights, so that the comprehensive weight of each index is obtained. The determined comprehensive weight is applied to verifying the Luohui Canal, Shaanxi large-scale gravity canal irrigation district as an example by the improved linear model. The calculation results agree with those by the extension evaluation method on the whole. With the passage of time, the evaluation level of the Luohui Canal irrigation district gradually becomes good, and the operation condition is getting better and better, which conforms to its development reality.