论文标题
与极端主义者和温和派的偏爱模型中的意见动力和共识形成
Opinion dynamics and consensus formation in a Deffuant model with extremists and moderates
论文作者
论文摘要
在社会，行为和经济科学的不同学科中，基本问题类别与大量人群中个人意见的最终状态的预测有关。意见动力学研究的主要方面与达成协议和所需时间的可能性有关。一般而言，共识模型可以理解一组互动代理在几种选择中选择时是否可以达成共识：政治投票，观点，文化特征是其中众所周知的例子。意见动力学模型然后可以看作是共识模型的子集，当选择的选择是观点，并且可能达成的社会共识是意见协议。此外，在大量人群中，找到温和派的人是直观的，他们的观点不在政治舆论范围的极端情况下。由于其经验存在的广泛范围，对他们在意见动态过程中的影响的研究对于增强对大量人群的政治观点演变的理解非常重要。假设人群的意见分布通过一系列随机成对遇到的序列演变，旨在研究共识形成。在这项工作中，我们努力扩展经典的脱弗里特模型，除了极端分子外，还存在温和派的存在，以研究具有不同意见和参数初始配置的共识的出现。因此，我们评估了大量人群中的意见动力学过程中温和派对共识的表现的作用和重要性。我们表明，在模型参数的特定配置中，人口行为受到关键数量的温和派的影响：当达到此阈值时，人口中的意见会逐渐收敛
Among the different disciplines in the social, behavioral and economic sciences, a fundamental class of problems is related to the prediction of the final state of the presence of individual opinions in a large population. The main aspects investigated in the opinion dynamics are related to the possibility of reaching an agreement and the time needed. In general a consensus model allows to understand if a set of interacting agents can reach a consensus when choosing among several options: political vote, opinions, cultural features are well-known examples of them. Opinion dynamics models then can be seen as a sub-set of consensus models, when the options to choose from are opinions and the possible social consensus to be reached is the opinion agreement. Moreover, in large populations it is intuitive to find moderates, whose opinion is not at the extremes of the political opinion spectrum. Due to the wide range of their empirical presence, the study of their influence in the opinion dynamics processes is very important to enhance the comprehension of the political opinions evolution in large populations. The Deffuant model is aimed at studying consensus formation assuming that the opinion distribution of a population evolves via a sequence of random pairwise encounters. In this work we strive to extend the classical Deffuant model with the presence of moderates in addition to the extremists, so as to study the emergence of consensus with different initial configurations of opinions and parameters. Therefore, we assess the role and the importance of the moderates for the appearance of consensus in the opinion dynamics processes within in large populations. We show that the population behavior is affected by the presence of a critical number of moderates, in specific configurations of the model parameters: when this threshold is reached the opinions in the population progressively converge
