A Result for Approximation of Imitational Behavior in Large Populations
This paper rigorously justifies the approximation of aggregate imitational behavior in large populations by the deterministic dynamics given by Bjonerstedt and Weibull. We first clarify what models fit their formulation, in which the stochastic dynamics depends only on the average frequencies of strategies in populations. Then we show that the stochastic process of each individual's behavior converges to a common McKean process and the average frequencies come to represent the deterministic dynamics of Bjonerstedt and Weibull when the number of individuals goes to infinity. Another derivation of replicator dynamics is also given by application to specific models of imitational behavior.
Year of publication: |
2004-01
|
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Authors: | Yasuo, TANABE |
Institutions: | Economic and Social Research Institute (ESRI), Cabinet Office |
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