@article{Sahasranaman:2016:10.1371/journal.pone.0166960,
author = {Sahasranaman, A and Jensen, HJ},
doi = {10.1371/journal.pone.0166960},
journal = {PLOS One},
title = {Dynamics of Transformation from Segregation to Mixed Wealth Cities},
url = {http://dx.doi.org/10.1371/journal.pone.0166960},
volume = {11},
year = {2016}
}

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TY  - JOUR
AB  - We model the dynamics of a variation of the Schelling model for agents described simply bya continuously distributed variable—wealth. Agent movement is not dictated by agentchoice as in the classic Schelling model, but by their wealth status. Agents move to neighborhoodswhere their wealth is not lesser than that of some proportion of their neighbors,the threshold level. As in the case of the classic Schelling model, we find here that wealthbasedsegregation occurs and persists. However, introducing uncertainty into the decisionto move—that is, with some probability, if agents are allowed to move even though thethreshold condition is contravened—we find that even for small proportions of such disallowedmoves, the dynamics no longer yield segregation but instead sharply transition into apersistent mixed wealth distribution, consistent with empirical findings of Benenson, Hatna,and Or. We investigate the nature of this sharp transformation, and find that it is because ofa non-linear relationship between allowed moves (moves where threshold condition is satisfied)and disallowed moves (moves where it is not). For small increases in disallowedmoves, there is a rapid corresponding increase in allowed moves (before the rate ofincrease tapers off and tends to zero), and it is the effect of this non-linearity on the dynamicsof the system that causes the rapid transition from a segregated to a mixed wealth state.The contravention of the tolerance condition, sanctioning disallowed moves, could be interpretedas public policy interventions to drive de-segregation. Our finding therefore suggeststhat it might require limited, but continually implemented, public intervention—just sufficientto enable a small, persistently sustained fraction of disallowed moves so as to trigger thedynamics that drive the transformation from a segregated to mixed equilibrium.
AU  - Sahasranaman,A
AU  - Jensen,HJ
DO  - 10.1371/journal.pone.0166960
PY  - 2016///
SN  - 1932-6203
TI  - Dynamics of Transformation from Segregation to Mixed Wealth Cities
T2  - PLOS One
UR  - http://dx.doi.org/10.1371/journal.pone.0166960
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000388350300137&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/48964
VL  - 11
ER  - 

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