我们提出了一个集体意见形成模型与所谓的确认偏见。确认偏误是一种心理效应,在意见形成的背景下,赞成某个意见的个人容易将新的信息误解为支持个人当前的信念。我们的模型修改了单个个体的贝叶斯决策模型[M.拉宾和J. L. Schrag,Q. J. Econ. 114,37(1999)]的情况下,相互作用的个体的良好混合的人口在没有外部输入。我们数值模拟的模型表明,所有的代理人最终同意的两个意见之一,只有当确认偏差是弱的。否则,随机种群动力学最终会产生不一致的配置(也称为极化),特别是对于大系统尺寸。强烈的确认偏差允许不同部分的个体最终形成不同的不同意配置,以支持相反的意见。
英文摘要:
We propose a collective opinion formation model with a so-called confirmation bias. The confirmation bias is a psychological effect with which, in the context of opinion formation, an individual in favor of an opinion is prone to misperceive new incoming information as supporting the current belief of the individual. Our model modifies a Bayesian decision-making model for single individuals [M. Rabin and J. L. Schrag, Q. J. Econ. 114, 37 (1999)] for the case of a well-mixed population of interacting individuals in the absence of the external input. We numerically simulate the model to show that all the agents eventually agree on one of the two opinions only when the confirmation bias is weak. Otherwise, the stochastic population dynamics ends up creating a disagreement configuration (also called polarization), particularly for large system sizes. A strong confirmation bias allows various final disagreement configurations with different fractions of the individuals in favor of the opposite opinions.
Probabilistic neighbors' selection competes with confirmation bias in a bounded confidence model
CNRS, Complex Systems Institute of Paris Île-de-France (ISC-PIF)(法国国家科学研究中心,巴黎法兰西岛复杂系统研究所);Laboratoire de Physique Théorique et Modélisation, CNRS-CY Cergy Paris Université(理论与建模物理实验室,CNRS-CY塞尔吉巴黎大学);EHESS, Centre d’Analyse et de Mathématique Sociales (CAMS)(高等社会科学学院,社会分析与数学中心);Cergy Paris Université(塞尔吉巴黎大学)
The closed loop between opinion formation and personalised recommendations
University College Groningen, University of Groningen(格罗宁根大学格罗宁根大学学院);University of Twente(特文特大学);Univ. Grenoble Alpes(格勒诺布尔阿尔卑斯大学);CNRS(法国国家科学研究中心);Inria(法国国家信息与自动化研究所);Grenoble INP(格勒诺布尔国立高等物理、数学与信息学院)