基于复杂网络模型的供应链企业合作演化研究

Supply Chain Enterprise Cooperation Evolution Based on Complex Network Model

为了探究供应链网络节点企业间合作演化的规律,本文在研究现实复杂网络度分布指数的基础上引入了双段幂律分布概念,并结合适应度和噪声涨落两方面因素构建了复杂网络环境下基于双段幂律分布的供应链网络企业合作演化模型。利用数值仿真对该模型进行分析,结果表明适应度是双段幂律分布产生的主导因素;而噪声涨落因素对企业度值影响很小,但可以影响幂指数。最后,以中国汽车制造业供应链网络为实证对象,利用演化模型得出双段幂律分布的幂指数γ1为0.59、γ2为3.4,与中国汽车制造业供应链网络演化的契合程度较高,验证了模型的有效性,并对供应链网络企业合作演化的机理进行了阐释。

To explore and study the regular pattern of the cooperation evolution of enterprises,this paper introduces the concept of two-stage power law distribution on the basis of studying the degree distribution index of realistic complex networks.And constructs an evolution model according two-stage power-law distribution combined with fitness and noise fluctuation under complex network.Then using the numericalsimulation to analyze the model,the simulation results show that the fitness of normal distribution is the dominant factor in the generation of two-stage power law distribution.Noise fluctuation has little effect on enterprise value,but it can affect power exponents.Finally,this paper takes the supply chain network of China's automobile manufacturing industry as an example.The power exponents γ1 and γ2 of the two-stage power law distribution of the network are 0.59 and 3.4 separately,which is in good agreement with the evolution of the supply chain network of China's automobile manufacturing industry.Also example verifies the validity of proposed model,and expounds the mechanism of cooperative evolution of supply chain network enterprises.