突发事件社交网络舆情的扩散与控制

发布时间：2018-04-08 19:10

本文选题：突发事件　切入点：社交网络舆情　出处：《系统工程》2017年01期

【摘要】：针对突发事件社交网络舆情扩散特征,考虑政府及公众媒体对社交网络舆情参与者产生的影响,建立一种突发事件社交网络舆情扩散模型。定义并分析突发事件社交网络舆情扩散趋势的转折点,由舆情扩散模型推导出度量突发事件社交网络舆情扩散趋势的测度,同时给出并证明在不同舆情扩散测度下转折点的存在性及舆情扩散趋势。根据舆情扩散测度给出一种最优控制的目标函数,利用舆情扩散测度的关键因素,推导出使目标函数值最小的舆情扩散控制方法。通过数值模拟计算,说明模型及控制方法的有效性和实用性。
[Abstract]:Considering the influence of government and public media on the participants of social network public opinion, a public opinion diffusion model of emergency social network is established.This paper defines and analyzes the turning point of the trend of public opinion diffusion in emergency social network, and deduces the measure of the trend of public opinion diffusion in unexpected social network from the model of public opinion diffusion.At the same time, the existence of turning point and the tendency of public opinion diffusion under different measure of public opinion diffusion are given and proved.According to the public opinion diffusion measure, an objective function of optimal control is given. Using the key factors of the public opinion diffusion measure, a method of public opinion diffusion control is derived, which minimizes the value of the objective function.The effectiveness and practicability of the model and control method are illustrated by numerical simulation.
【作者单位】：燕山大学经济管理学院;
【基金】：国家自然科学基金资助项目(71171174) 河北省自然科学基金资助项目(G2014203219)
【分类号】：C912.63

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