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提出了一种非相互独立运输投资项目决策的研究方法，首先对运输投资项目之间的互相独立、相互补充、相互替代和相互补代作用性质进行了分类研究．然后研究了项目之间的相互影响程度及目标值确定．利用有序组合树方法建立了方案集．用群组决策方法确定项目目标值的权重，最后运用模糊数学理论研究了项目优选的模糊数学方法．
This paper presents a research method for decision-making of non-independent transport investment project. Firstly, the transport investment projects are categorized independently of each other, complement each other, replace each other and complement each other. Then we study the degree of mutual influence between the project and the target value. Set up a set of programs using the method of orderly combinatorial tree. The group decision-making method is used to determine the weight of the target value of the project. Finally, fuzzy mathematical theory is applied to study the fuzzy mathematics method of project optimization.