双层社会网络上的舆情传播动力学分析

本文构建了由线上社交网络和线下物理接触网络构成的双层社会网络模型,通过理论分析计算出稳态时的舆情传播者比例,得到双层社会网络上的舆情传播阈值大于单层线上网络舆情传播阈值,而小于单层线下网络舆情传播阈值.仿真实验结果表明,在线社交网络能够扩大舆情传播范围、加快舆情传播速度.各层子网的传播率对另一层网络中传播者比例几乎没有影响.此外,来自于线下网络的传播者转移率对舆情传播过程的影响作用小于来自于线上网络的传播者转移率.

Public opinion spreading dynamics in a two-layer social network

This paper constructed a two-layer social network model and studied the public opinion spreading process. The model consists of two layers of networks with one layer is online social network and the other is offline social network. Through theoretical calculation we draw the density of spreaders in steady state, and find that the spreading threshold in two-layer network is larger than in online social network, but smaller than that in offline network. Further, through numerical simulations we find that the two-layer network could enhance the spreading speed and expand the spreading scale under the action of online social network. Besides, the studies about the effect of spreading rate on the density of spreader show that the spreading rate in one layer only affects the spreading process within the same layer but almost have no effect on the spreading process in the other layer, and the number of spreaders that transfers from offline social network is less effective than that from online social network.