Dresden 2006 – scientific programme
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AKSOE: Physik sozio-ökonomischer Systeme
AKSOE 10: Poster Session (posters are expected to be displayed the full day 8:30-18:00)
AKSOE 10.66: Poster
Wednesday, March 29, 2006, 16:00–18:00, P2
Modelling a public investment game: a dynamical approach — •Silvio R. Dahmen1, Roberto da Silva2, Ana L.C. Bazzan2, and Alexandre Baraviera3 — 1Instituto de Fisica, UFRGS, Brazil — 2Instituto de Informatica, UFRGS, Brazil — 3Instituto de Matematica, UFRGS, Brazil
In this paper we deal with a public investment game, where each agent may contribute with a quantity in the interest of the wealth of the group of investors. Interactions among agents happen in a neighborhood and depend on the motivation level (insider information, economy prospects). Several scenarios are investigated. In the deterministic case, we focus on the existence of periodic behavior for the profit of the group, whereas in the stochastic case we analyze the behavior of the global persistence. Our simulations show that this quantity has a robust power law updating behavior, indicating that this can be used to model emerging collective behavior. We have also performed simulations with heterogeneous agents, including deceiver and conservative agents. Finally we have performed simulations for the local persistence exploring two different versions of this concept: the probability of a particular agent not going bankrupt and the probability of a particular agent not losing money. Different power-law behaviors are also observed in these two situations.