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Regensburg 2016 – wissenschaftliches Programm

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 8: Plenary talk Jorge Pacheco

SOE 8.1: Plenarvortrag

Dienstag, 8. März 2016, 08:30–09:15, H1

Linking Individual to Collective Behavior in Complex Adaptive Networks — •Jorge M. Pacheco — Departamento de Matemática e Aplicações, Universidade do Minho, 4710 - 057 Braga, Portugal

A central problem in Physics is to understand how collective behavior results from a given two- or N- body fundamental interaction. Similarly, in a society, a central problem is to understand the link between individual social behavior and emergent collective phenomena (vaccination, epidemics, crowd behavior, diffusion of innovations, etc). Here I address this problem by letting individuals engage in pair-wise interactions by means of a well-defined social dilemma (a prisoners dilemma of cooperation). These individuals are embedded in a social network that is both complex and adaptive. Adaptation here allows individuals to manifest preferences and resolve conflicts of interest, reshaping the network accordingly. Exact Monte-Carlo simulations reveal the inadequacy of any of the tools developed to date (mostly in the realm of Physics) to predict the co-evolutionary dynamics of the population at large. I will present and discuss in detail an adaptive-network-sensitive observable that is capable of predicting the collective, population-wide dynamics, given prior knowledge of the fundamental rules that govern the social interaction between 2 individuals in a social network.

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