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arXiv 1009.2643physics.soc-ph
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时标分离的观点动力学模型中的相变

Phase change in an opinion-dynamics model with separation of time scales

Gerardo Iñiguez, János Kertész, Kimmo K. Kaski, R. A. Barrio

摘要:

我们定义了一个意见形成模型的代理在一个一维环,其中的意见的代理演变,由于其与近邻的相互作用,并由于其积极或消极的态度对所有其他代理的整体情绪。虽然代理的意见的动态描述与适当的微分方程,从时间到时间对代理被允许改变他们的位置,以改善意见的同质性(或舒适的感觉)相对于他们的短程环境。通过这种方式,交易动态的时间尺度和环境更新的时间尺度被很好地分离,并由单个参数控制。通过改变这个参数,我们发现了一个阶段性的变化,在未决定的个人的数量。这一现象的产生是因为代理人之间过于频繁的地点交换导致他们在形成意见时感到沮丧。我们的平均场分析支持这一观点。

英文摘要:

We define an opinion formation model of agents in a 1d ring, where the opinion of an agent evolves due to its interactions with close neighbors and due to its either positive or negative attitude toward the overall mood of all the other agents. While the dynamics of the agent's opinion is described with an appropriate differential equation, from time to time pairs of agents are allowed to change their locations to improve the homogeneity of opinion (or comfort feeling) with respect to their short range environment. In this way the time scale of transaction dynamics and that of environment update are well separated and controlled by a single parameter. By varying this parameter we discovered a phase change in the number of undecided individuals. This phenomenon arises from the fact that too frequent location exchanges among agents result in frustration in their opinion formation. Our mean field analysis supports this picture.

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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