Cluster Size Distributions of Heterogeneous Economic Agents: Are there non-self-averaging phenomena in economics?
This paper outlines the applications of one-and two-parameter Poisson-Dirichlet distributions to describe stationary statistical distributions of clus-ters of agents by types. We discuss how the notion of residudal allocation processes in statistics and population genetics literature also arises as stick-breaking processes in the physics literature. The phenomena of self-(non-) averaging in the physics literature are analogous to long-run non-vanishing of profits or variances of capital sizes in some disequilibrium economic dy-namics. We offer an economic interpretation of the physical notion of non-self-averaging as something that refers to the existence of long-run dise-quilibrium phenomena in economics, rather than thermodynamic limits in statistical physics, since both involve non-vanishing of variances as the size or the time goes to infinity.
|Date of creation:||Nov 2005|
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- Masanao Aoki, 2002.
"Open Models of Share Markets with Two Dominant Types of Participants,"
UCLA Economics Online Papers
107, UCLA Department of Economics.
- Aoki, Masanao, 2002. "Open models of share markets with two dominant types of participants," Journal of Economic Behavior & Organization, Elsevier, vol. 49(2), pages 199-216, October.
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