Fu Feng, Wang Long
Program for Evolutionary Dynamics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jul;78(1 Pt 2):016104. doi: 10.1103/PhysRevE.78.016104. Epub 2008 Jul 11.
We investigate the coevolutionary dynamics of opinions and networks based upon majority-preference (MP) and minority-avoidance (MA) rules. Under MP, individuals adopt the majority opinion among their neighbors; while in MA individuals can break the link to one holding a minority and different opinion, and rewire either to neighbors of their neighbors with the same opinion or to a random one from the whole population except their nearest neighbors. We study opinion formation as a result of combination of these two competing rules, with a parameter tuning the balance between them. We find that the underlying network can be self-organized into connected communities with like-minded individuals belonging to the same group; thus a broad variety of opinions coexist. Diverse opinions disappear in a population in which all individuals share a uniform opinion, when the model parameter exceeds a critical value. Furthermore, we show that an increasing tendency to redirect to neighbors of neighbors is more likely to result in a consensus of opinion.
我们基于多数偏好（MP）和少数规避（MA）规则研究观点与网络的协同进化动态。在MP规则下，个体采纳其邻居中的多数观点；而在MA规则下，个体可以切断与持有少数且不同观点者的联系，并重新连接到持有相同观点的邻居的邻居，或者从除最近邻居之外的全体人群中随机选择一个进行连接。我们研究这两种相互竞争规则相结合所导致的观点形成，通过一个参数来调整它们之间的平衡。我们发现，基础网络可以自组织成由志同道合的个体组成的相连社区，从而各种观点得以共存。当模型参数超过临界值时，在所有个体都持有统一观点的群体中，不同观点消失。此外，我们表明，转向邻居的邻居的倾向增加更有可能导致观点的一致。
