针对现实港口网络自身的结构特征,提出一个具有无标度特性的港口网络演化模型.在经典BBV加权网络模型的基础上,通过引进三角连接结构,研究了三角结构的演化机制对无标度模型结构特性的影响.仿真结果表明,该港口网络的度和强度都服从幂率分布.港口网络的平均簇系数与度的函数关系服从幂率分布.仿真结果表明三角结构的演化机制能够显著的提高网络的聚类系数.
A weighted evolving model of scale-free port network is proposed according to the structure characteristics of real port network. Triad formation mechanism is considered in process of evolving based on traditional BBV weighted network. The effect of triad formation on the structure of the evolving scale-free model is investigated. The evolution of degree and strength exhibits the power-law distributions. The average clustering coefficient exhibits power-law decay as a function of degree of node. Triad formation mechanism can distinctly enhance the clustering coefficient of network.