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Model reduction for agent-based social simulation: Coarse-graining a civil violence model

Author(s): Zou, Yu; Fonoberov, VA; Fonoberova, M; Mezic, I; Kevrekidis, Yannis G.

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dc.contributor.authorZou, Yu-
dc.contributor.authorFonoberov, VA-
dc.contributor.authorFonoberova, M-
dc.contributor.authorMezic, I-
dc.contributor.authorKevrekidis, Yannis G.-
dc.identifier.citationZou, Y, Fonoberov, VA, Fonoberova, M, Mezic, I, Kevrekidis, YG. (2012). Model reduction for agent-based social simulation: Coarse-graining a civil violence model. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 85 (6), 10.1103/PhysRevE.85.066106en_US
dc.description.abstractAgent-based modeling (ABM) constitutes a powerful computational tool for the exploration of phenomena involving emergent dynamic behavior in the social sciences. This paper demonstrates a computer-assisted approach that bridges the significant gap between the single-agent microscopic level and the macroscopic (coarse-grained population) level, where fundamental questions must be rationally answered and policies guiding the emergent dynamics devised. Our approach will be illustrated through an agent-based model of civil violence. This spatiotemporally varying ABM incorporates interactions between a heterogeneous population of citizens [active (insurgent), inactive, or jailed] and a population of police officers. Detailed simulations exhibit an equilibrium punctuated by periods of social upheavals. We show how to effectively reduce the agent-based dynamics to a stochastic model with only two coarse-grained degrees of freedom: the number of jailed citizens and the number of active ones. The coarse-grained model captures the ABM dynamics while drastically reducing the computation time (by a factor of approximately 20). © 2012 American Physical Society.en_US
dc.format.extent066106-1 - 066106-13en_US
dc.relation.ispartofPhysical Review E - Statistical, Nonlinear, and Soft Matter Physicsen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleModel reduction for agent-based social simulation: Coarse-graining a civil violence modelen_US
dc.typeJournal Articleen_US

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