Minority-Majority Relations in the Schelling Model of Residential Dynamics
Minority-Majority Relations in the Schelling Model of Residential Dynamics
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DOI：
10.1111/j.1538-4632.2011.00820.x
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发表时间：
2011-07-01
影响因子：
3.6
通讯作者：
Hatna, Erez
中科院分区：
文献类型：
--
作者：
Benenson, Itzhak;Hatna, Erez
谢林模型描述了两组居住代理之间的隔离，反映了非经济力量推动居住迁移的最抽象、最基本的观点：与“你自己”的人亲近。该模型假设居住代理，位于“朋友”的比例小于预定义阈值F的社区，尝试重新安置到该比例为F或更高的社区。对于相同规模的群体，谢林的居住模式收敛于完全整合（随机模式）或隔离，这取决于F。我们研究了谢林模型模式动态作为F的函数，以及其他两个参数：群体数量的比例和邻居大小。我们证明了传统的集成-分离模式二分法应该得到扩展。在不同规模的群体中，f值存在一个很宽的间隔，这需要第三种持久的居住模式，在这种模式中，多数人口的一部分分离，而其余部分仍然与少数群体融合。我们还证明了谢林模型的动态本质上取决于城市主体居住行为的形式化。为了获得真实的结果，智能体应该是满足者，并且不考虑邻居状态而迁移的智能体的比例应该是非零的。我们讨论了我们的结果和现实生活中的住宅动态之间的关系。
The Schelling model describing segregation between two groups of residential agents, reflects the most abstract, basic view of noneconomic forces motivating residential migrations: be close to people of "your own" kind. The model assumes that residential agents, located in neighborhoods where the fraction of "friends" is less than a predefined threshold value F, try to relocate to neighborhoods where this fraction is F or higher. For groups of equal size, Schelling's residential pattern converges either to complete integration (random pattern) or segregation, depending on F. We investigate Schelling model pattern dynamics as a function of F in addition to two other parameters the ratio of groups' numbers, and neighborhood size. We demonstrate that the traditional integration-segregation pattern dichotomy should be extended. In the case of groups of different sizes, a wide interval of F-values exists that entails a third persistent residential pattern, one in which a portion of the majority population segregates while the rest remains integrated with the minority. We also demonstrate that Schelling model dynamics essentially depend on the formalization of urban agents' residential behavior. To obtain realistic results, the agents should be satisficers, and the fraction of the agents relocating irrespective of the neighborhood's state should be nonzero. We discuss the relationship between our results and real-world residential dynamics.