分层供应链复杂网络局部演化模型研究

Local Evolving Model Research of Layered Supply Chains Complex Networks

供应链是一种动态的、自适应性、自组织的复杂网络系统,具有典型的复杂网络特征。考虑了供应链网络的整体宏观行为,通过分析企业节点的产生、衰亡及退出等生长演化规律,以节点多属性参数组合作为优先连接的依据,建立了一个分层加权供应链网络模型。实验结果显示,该模型具有无标度特性,其幂律分布的指数落在(2,3)范围内,而且具有较大的集聚系数及较小的平均路径长度,表明了其具有小世界效应。

As a complex network system, supply chains have some characteristics of complex networks as dynamic, selg adaptability, self-organizational, etc. This paper considered the whole macroscopic behavior of supply chains networks, analyzed growth evolving rule of birth, decline, and exit of enterprise node, and constructed a layered weighted supply chains network model based on preferential attachment of multiattribute parameter combination of nodes. The experi- ment results verify the scale-free property of the model,whose exponent of power law is in the range form 2 to 3, and it has higher clustering and lesser average path length with network size, which shows that the model exhibits small-world property.