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arXiv 2602.19684physics.soc-ph
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群体适应驱动高阶网络中的意见动力学

Group adaptation drives opinion dynamics in higher-order networks

Aix-Marseille Univ, Université de Toulon, CNRS, CPT(艾克斯-马赛大学,土伦大学,法国国家科学研究中心,复杂系统物理中心);Turing Center for Living Systems(图灵生命系统中心)

Cosimo Agostinelli, Marco Mancastroppa, Alain Barrat

AI总结:

本文提出一个结合群体讨论与适应性分裂的有限置信模型,研究群体互动和适应性如何影响意见演化,发现适应性抑制群体效应并恢复成对交互的相变现象。

摘要:

在现代互联社会中,观点和信念可以迅速在大量人群中传播,引发诸如社会规范采纳或两极分化等集体行为。这些现象激发了许多旨在从简单交互机制中再现涌现特性的模型。特别是,意见动力学模型描述了个人意见如何通过交互演化,并研究全局共识或两极分化的条件。大多数模型假设这些交互发生在成对的智能体之间,通常是在固定的网络结构上。然而,意见变化可能发生在群体中,如果出现分歧,群体也可能发生适应性变化。在这里,我们提出了一个有限置信模型,该模型包含两种机制:群体讨论可以导致成员之间的全局一致,而强烈的内部分歧导致群体分裂,产生的子群体与其他群体合并。我们系统地研究了模型结果作为智能体对一致性的容忍度的函数。引人注目的是,适应性抑制了群体交互的关键效应,恢复了接近成对交互的现象学。特别是,适应性使得大型群体的形成成为可能,并防止了在小容忍度下的碎片化。它还恢复了从两极分化到共识的相变,而这种相变在非适应性的基于群体的模型中会消失。总的来说,我们的工作表明,适应性和群体互动共同塑造了社会联系的结构和全局意见动力学。

英文摘要:

In modern interconnected societies, opinions and beliefs can quickly spread across large populations, giving rise to collective behaviors such as the adoption of social norms or polarization. These phenomena have motivated many models aimed at reproducing emergent properties from simple interaction mechanisms. In particular, opinion dynamics models describe how individual opinions evolve through interactions and study the conditions for global consensus or polarization. Most models assume that these interactions occur between pairs of agents, typically on a fixed network structure. However, opinion changes can occur in groups, which may also undergo adaptive changes if disagreement arises. Here, we propose a bounded confidence model that incorporates both mechanisms: group discussions can lead to global agreement among members, while strong internal disagreement causes groups to split, with resulting subgroups merging with others. We systematically study the model outcomes as a function of agents' tolerance for agreement. Strikingly, adaptivity suppresses key effects of group interactions, restoring a phenomenology close to that of pairwise interactions. In particular, adaptivity enables the formation of large groups and prevents fragmentation at small tolerance. It also restores a phase transition from polarization to consensus, which would otherwise disappear in a non-adaptive group-based model. Overall, our work shows that both adaptivity and group interactions shape the structure of social ties and global opinion dynamics in a population.

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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