地区农业节水灌溉项目投资方案优选——基于格序理论与组合赋权的决策方法

Optimization of investment decision-making for agricultural water-saving projects based on lattice-order theory and combination weights

为对地区农业节水灌溉项目投资做出科学决策,结合项目投资决策的不确定性、多目标性等特点,针对单一主观或者客观赋权方法的缺陷问题,提出一种基于格序理论与组合赋权的地区农业节水灌溉项目投资方案优选决策方法。首先,通过构建优化模型对决策指标的主、客观权重进行优化组合,求得组合权重值;然后,运用格序决策理论,构建农业节水灌溉项目投资方案优选模型,结合加权Kaufmann距离的概念,对备选方案进行优选排序;最后,结合算例验证该方法的可行性和有效性。

In order to make scientific decisions on the investment of regional agricultural water-saving ir- rigation project, considering the investment decisions to be uncertain and multi-objective, and the single subjective or objective weights method to be defective, a decision-making method of optimization of in- vestment for agricultural water-saving irrigation projects based on lattice-order theory and combination weights is proposed. First, the value of combined weights was obtained by constructing the optimization model to optimize the combination of subjective weights and objective weights of the decision indexes. Then an optimal model of investment decision-making for agricultural water-saving irrigation projects was proposed using the lattice-order theory, and the alternatives were sorted and chosen by combining with the concept of weighted Kaufmann distance. At last, the feasibility and effectiveness of the method were illus- trated by a computational example.