Berlin 2008 – wissenschaftliches Programm
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AKSOE: Arbeitskreis Physik sozio-ökonomischer Systeme
AKSOE 13: Poster Session (posters on display 10:00-19:00)
AKSOE 13.8: Poster
Mittwoch, 27. Februar 2008, 17:30–19:00, Poster G
Seeking for criteria to define optimality in economic and social systems — Elena Ramírez Barrios1 and •Juan G. Díaz Ochoa2 — 1Fachbereich 7, Bremen University, Hochschulring 4, D28359 Bremen — 2Fachbereich 1, Bremen University, Otto Hahn Allee, D-28359 Bremen
Modeling social phenomena as, for example, voters models or consumers trends formation, is strength elated with collective processes, where the whole population are seeking for an optimum. This social optimum is, for instance, the increase of the total populations welfare within an economic system, or increasing the trust degree inside a given society. However, the criteria to achieve these social optima is difficult to define, because social consensus is underlying these processes and complete coordination is very hard to achieve (Arrow, 1951, 1963). Furthermore, this coordination process has different dynamics between small and large population groups, making more difficult to find appropriate unique criteria.
Using techniques from systems with self organized criticality, we define a system with non-fixed links between individuals, originating continuous fluctuations in the definition of the criteria for an optimum. This model is pillared in system of agents with changing preferences, altering the connectivity with their neighbors. With our simulations we found out that optimization criteria are non static, but exhibit a kind of punctuated equilibrium. This result is analyzed when the system lies in a critical state.