Competing social contagions with opinion-dependent infectivity.

IF 2.2 3区 物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS
Corbit R Sampson, Juan G Restrepo
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引用次数: 0

Abstract

The spread of disinformation (maliciously spread false information) in online social networks has become an important problem in today's society. Disinformation's spread is facilitated by the fact that individuals often accept false information based on cognitive biases which predispose them to believe information that they have heard repeatedly or that aligns with their beliefs. Moreover, disinformation often spreads in direct competition with corresponding true information. To model these phenomena, we develop a model for two competing beliefs spreading on a social network, where individuals have an internal opinion that models their cognitive biases and modulates their likelihood of adopting one of the competing beliefs. By numerical simulations of an agent-based model and a mean-field description of the dynamics, we study how the long-term dynamics of the spreading process depend on the initial conditions for the number of spreaders and the initial opinion of the population. We find that the addition of cognitive biases enriches the transient dynamics of the spreading process, facilitating behavior such as the revival of a dying belief and the overturning of an initially widespread opinion. Finally, we study how external recruitment of spreaders can lead to the eventual dominance of one of the two beliefs.

与意见依赖传染性相竞争的社会传染。
在网络社交网络上传播虚假信息(恶意传播虚假信息)已经成为当今社会的一个重要问题。虚假信息的传播是由这样一个事实推动的,即个人经常接受基于认知偏见的虚假信息,这种偏见使他们倾向于相信他们反复听到的信息或与他们的信念一致的信息。此外,虚假信息的传播往往与相应的真实信息直接竞争。为了对这些现象进行建模,我们开发了一个在社交网络上传播的两种相互竞争的信念的模型,在这个模型中,个人有一种内部观点,这种观点模拟了他们的认知偏见,并调节了他们采用一种相互竞争的信念的可能性。通过基于智能体模型的数值模拟和动力学的平均场描述,我们研究了扩散过程的长期动力学如何依赖于扩散者数量的初始条件和种群的初始意见。我们发现,认知偏见的加入丰富了传播过程的短暂动态,促进了诸如垂死信念的复兴和最初广泛传播的观点的推翻等行为。最后,我们研究了外部招募传播者如何导致两种信念中的一种最终占据主导地位。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Physical Review E
Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL
CiteScore
4.50
自引率
16.70%
发文量
2110
期刊介绍: Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.
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