Regensburg 2002 – scientific programme
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AKSOE: Physik sozio-ökonomischer Systeme
AKSOE 12: Postersitzung
AKSOE 12.9: Poster
Monday, March 11, 2002, 16:00–18:00, D
Coordination of Decisions in a Spatial Agent Model — •Frank Schweitzer1,2, Jörg Zimmermann1,3, and Heinz Mühlenbein1 — 1FhG Institut für Autonome Intelligente Systeme, 53754 Sankt Augustin — 2Institut für Physik, Humboldt Universität, 10099 Berlin — 3Institut für Informatik, Universität Bonn, 53117 Bonn
For a binary choice problem, the spatial coordination of decisions in an agent community is investigated. We derive critical parameters for the emergence of minorities and majorities of agents making opposite decisions and simulate their spatial organization. We find that dependent on two essential parameters describing the local impact and the spatial dissemination of information, either a definite stable minority/majority relation (single-attractor regime) or a broad range of possible values (multi-attractor regime) occurs. In the latter case, the outcome of the decision process becomes rather diverse and hard to predict, both with respect to the share of the majority and their spatial distribution. We further investigate how a dissemination of information on different time scales affects the outcome of the decision process.
Schweitzer, F., Holyst, J., Europ. Phys. J. B 15/4 (2000) 723-732
Schweitzer, F.; Zimmermann, J., Mühlenbein, H., Physica A 303/1-2 (2002) 189-216