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arXiv 1502.07238physics.soc-ph
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未决定的关键:三态模型中的互动驱动观点动力学

The undecided have the key: Interaction-driven opinion dynamics in a three state model

Pablo Balenzuela, Juan Pablo Pinasco, Viktoriya Semeshenko

摘要:

人际互动对个人协议的影响导致了社会聚合过程,这反映在集体国家的形成中,例如,对特定问题有相似意见的个人群体。这一领域长期以来一直是社会学家和心理学家关注的问题,现已扩展为实验社会心理学的一个领域,甚至引起了物理学家和数学家的注意。在这篇文章中,我们提出了一个新的意见形成模型,其中代理人可能有一个严格的选择偏好,或未定。在人际交往过程中,人们通过反复的互动,对两个极端观点中的一个产生了累积的信念,从而出现了观点转变。有两个主要的成分,发挥关键作用,在确定的稳定状态:初始分数的未决定的代理人和信念的敏感性,在每个互动。作为这两个参数的函数,该模型提出了广泛的可能解决方案,例如,每个意见的共识,两极分化或未决定的个人的收敛。我们发现,最小比例的未决定的代理人是至关重要的,不仅达成共识的一个给定的意见,但也要确定一个主导的意见,在两极分化的情况。为了更深入地理解动力学,我们还提出了模型的理论主方程。

英文摘要:

The effects of interpersonal interactions on individual's agreements result in a social aggregation process which is reflected in the formation of collective states, as for instance, groups of individuals with a similar opinion about a given issue. This field, which has been a longstanding concern of sociologists and psychologists, has been extended into an area of experimental social psychology, and even has attracted the attention of physicists and mathematicians. In this article, we present a novel model of opinion formation in which agents may either have a strict preference for a choice, or be undecided. The opinion shift emerges during interpersonal communications, as a consequence of a cumulative process of conviction for one of the two extremes opinions through repeated interactions. There are two main ingredients which play key roles in determining the steady state: the initial fraction of undecided agents and the conviction's sensitivity in each interaction. As a function of these two parameters, the model presents a wide range of possible solutions, as for instance, consensus of each opinion, bi-polarisation or convergence of undecided individuals. We found that a minimum fraction of undecided agents is crucial not only for reaching consensus of a given opinion, but also to determine a dominant opinion in a polarised situation. In order to gain a deeper comprehension of the dynamics, we also present the theoretical master equations of the model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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