基于Bak—Sneppen模型的舆论传播机制研究

THE RESEARCH OF MECHANISM OF TRANSMISSION OF PUBLIC OPINION BASED ON THE BAK- SNEPPEN MODEL

BS模型通过简单的演化规则体现出复杂的演化动力学．将BS模型应用到舆论传播模型，在模型中植人一个新的参数一节点的质疑度，它是表示该个体对某一件舆论信息提出质疑的程度．质疑度越小，表明个体对舆论信息越相信，反之，越不相信．通过对模型性质研究和数值模拟发现，带有质疑度改进的BS模型上的舆论传播具有许多生物界进化的相似性．模型中的质疑度等性质在网络随时间演化充分时间后，网络能够自组织达到一个稳定临界态，稳定临界态指数也可以计算得到．

Bak -Sneppen model reflects the complex evolutionary dynamics by a simple evolution rules . Improvement of Bak - Sneppen biological evolution model applied to the transmission of public opinion. Each individual in the model has been given to a degree of questioning that the individual information on a public opinion, the smaller the degree, the more believe. There are many similarities with the Bak - Sneppen model by study the nature of model and numerical simulation. Finally evolutioning to a stable self - organized critical state through the simulation of the model , the critical exponent of the model on a steady state is also acquired.