基于在线社交网络的信息传播模型

The research of information dissemination model on online social network

本文构造了一个基于在线社交网络的信息传播模型.该模型考虑了节点度和传播机理的影响,结合复杂网络和传染病动力学理论,进一步建立了动力学演化方程组.该方程组刻画了不同类型节点随着时间的演化关系,反映了传播动力学过程受到网络拓扑结构和传播机理的影响.本文模拟了在线社交网络中的信息传播过程,并分析了不同类型节点在网络中的行为规律.仿真结果表明由于在线社交网络的高度连通性,信息在网络中传播的门槛几乎为零;初始传播节点的度越大,信息越容易在网络中迅速传播;中心节点具有较大的社会影响力;具有不同度数的节点在网络中的变化趋势大体相同.研究表明该模型符合在线社交网络的特性,有助于更深刻地理解发生在在线社交网络中的传播行为.

In this paper,we propose a general stochastic model for the information dissemination on the online social network.The model considers the node of degree and propagation mechanism,utilizes complex network theory and dynamics of infectious diseases,and finally establishes the dynamic evolution equations.The dynamic evolution equations describe the evolution process of different types of nodes,and show that the propagation process is influenced by network topology and propagation mechanism.We simulate the information spreading process,and analyze the behavior of different types of nodes on online social network.Simulation results show that information can spread easily on the online social network because of the good connectivity.The greater the degree of the initial spread node,the faster the information spreads on online social network.Center nodes have great social influence,and the nodes with different degrees have the similar trend on online social network.Research shows that the model,having the same characteristics with online social network,contributes to a more profound understanding of information dissemination behavior on online social network.