To express integrated optimization of multiple hubs location and mixed network design, a bi-level programming model was introduced for mathematical models.
为了描述多枢纽选址与混合网络设计综合优化问题，引入了双层规划模型建立数学模型。
In this paper, we present a new solution method for bi-level programming model for discrete equilibrium ur - ban road network design problems.
本文提出了一种新的求解离散网络平衡设计二层规划模型的算法。
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