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Network Effects in Schelling's Model of Segregation: New Evidence from Agent-Based Simulation

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  • Amaud Banos

    (Équipe PARIS, Géographie-Cités, UMR 8504 Université Paris 1/CNRS and Paris/Île-de-France Complex Systems Institute (ISC-PIF))

Abstract

According to two recent studies, Thomas Schelling's model of segregation is only weakly affected by the underlying spatial structure whatever its complexity. Such a conclusion is important from an urban planning perspective as it suggests that only a very restricted range of possible actions, if any, would be able to contribute to limiting social segregation, unless individual preferences are significantly modified. My own simulations show that, using appropriate graph-based spatial structures, one can reveal significant spatial effects and thus provide alternative planning insights. Cliques in networks indeed play a significant role, reinforcing segregation effects in Schelling's model. Introducing a small amount of noise into the model permits us to reveal this effect more precisely, without modifying the global behavior of the initial model. Furthermore, I show how a logistic model describes in a concise but precise way this global behavior at an aggregated level.

Suggested Citation

  • Amaud Banos, 2012. "Network Effects in Schelling's Model of Segregation: New Evidence from Agent-Based Simulation," Environment and Planning B, , vol. 39(2), pages 393-405, April.
    • Handle: RePEc:sae:envirb:v:39:y:2012:i:2:p:393-405
    DOI: 10.1068/b37068
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    References listed on IDEAS

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    1. Fagiolo, Giorgio & Valente, Marco & Vriend, Nicolaas J., 2007. "Segregation in networks," Journal of Economic Behavior & Organization, Elsevier, vol. 64(3-4), pages 316-336.
    2. Jiang, Bin, 2007. "A topological pattern of urban street networks: Universality and peculiarity," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 384(2), pages 647-655.
    3. L. Gauvin & J. Vannimenus & J.-P. Nadal, 2009. "Phase diagram of a Schelling segregation model," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 70(2), pages 293-304, July.
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