Santa Fe Institute, 1399 Hyde Park Rd., Santa Fe, New Mexico 87501, USA.
Phys Rev E. 2019 Nov;100(5-1):050301. doi: 10.1103/PhysRevE.100.050301.
We study the opinion dynamics of a generalized voter model in which N voters are additionally influenced by two opposing news sources whose effect is to promote political polarization. As the influence of these news sources is increased, the mean time to reach consensus scales nonuniversally as N^{α}. The parameter α quantifies the influence of the news sources and increases without bound as the news sources become increasingly influential. The time to reach a politically polarized state, in which roughly equal fractions of the populations are in each opinion state, is generally short, and the steady-state opinion distribution exhibits a transition from near consensus to a politically polarized state as a function of α.
我们研究了广义投票模型中的意见动态，其中 N 个投票者还受到两个相反的新闻来源的影响，这两个新闻来源的作用是促进政治极化。随着这些新闻来源的影响增加，达到共识的平均时间按 N^{α}的比例非普遍增加。参数α量化了新闻来源的影响，随着新闻来源变得越来越有影响力，它会无限制地增加。达到政治极化状态的时间通常很短，在这种状态下，人口中大致相等的比例处于每种观点状态；随着α的变化，稳态观点分布从接近共识到政治极化状态的转变。
