论文标题

扩展的Schelling模型的动力学

Dynamics of extended Schelling models

论文作者

Vieira, A. P., Goles, E., Herrmann, H. J.

论文摘要

我们探索了Schelling的社会动态模型的扩展,其中两种类型的代理生活在棋盘格晶格上并移动以优化自己的满意度,这取决于邻居中有多少代理人具有相同的类型。对于每个数字$ n $的近距离邻居的$ n $,我们独立分配了二进制满意度变量$ s_ {k} $,仅当代理人对此条件满意时,否则等于零。这定义了32个不同的满意度规则,我们将详细研究这些规则,重点是模式形成和测量隔离,借助“能量”功能,该功能与不同类型的相邻药物的数量相关,并且在动力学中不起作用。我们认为棋盘格晶格已被充分占用,动态包括切换相反类型的随机选择的不满足的代理的位置。我们表明,从代理的随机分布开始,从长远来看,只有少数规则导致(几乎)完全隔离的模式,许多规则导致了混乱的稳态行为。然而,也可以动态生成其他有趣的模式,例如“抗隔离D”模式以及类似海绵的模式。

We explore extensions of Schelling's model of social dynamics, in which two types of agents live on a checkerboard lattice and move in order to optimize their own satisfaction, which depends on how many agents among their neighbors are of their same type. For each number $n$ of same-type nearest neighbors we independently assign a binary satisfaction variable $s_{k}$ which is equal to one only if the agent is satisfied with that condition, and is equal to zero otherwise. This defines 32 different satisfaction rules, which we investigate in detail, focusing on pattern formation and measuring segregation with the help of an "energy" function which is related to the number of neighboring agents of different types and plays no role in the dynamics. We consider the checkerboard lattice to be fully occupied and the dynamics consists of switching the locations of randomly selected unsatisfied agents of opposite types. We show that, starting from a random distribution of agents, only a small number of rules lead to (nearly) fully segregated patterns in the long run, with many rules leading to chaotic steady-state behavior. Nevertheless, other interesting patterns may also be dynamically generated, such as "anti-segregate d" patterns as well as patterns resembling sponges.

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