Crimaldi, Irene and Dai Pra, Paolo and Minelli, Ida G. Fluctuation Theorems for Synchronization of Interacting Polya's urns. Technical Report (Submitted)
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Abstract
We consider a model of N two-colors urns in which the reinforcement of each urn depends also on the content of all the other urns. This interaction is of mean-field type and it is tuned by a parameter \alpha in [0,1]; in particular, for \alpha=0 the N urns behave as N independent Polya's urns. For \alpha>0 urns synchronize, in the sense that the fraction of balls of a given color converges a.s. to the same (random) limit in all urns. In this paper we study fluctuations around this synchronized regime. The scaling of these fluctuations depends on the parameter \alpha. In particular, the standard scaling t^{-1/2} appears only for \alpha>1/2. For \alpha\geq 1/2 we also determine the limit distribution of the rescaled fluctuations. We use the notion of stable convergence, which is stronger than convergence in distribution.
Item Type: | Working Paper (Technical Report) |
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Additional Information: | preprint on ArXiv (1407.5043), submitted |
Uncontrolled Keywords: | Fluctuation theorem, Interacting system, Stable convergence, Synchronization, Urn model |
Subjects: | H Social Sciences > HA Statistics Q Science > QA Mathematics |
Research Area: | Economics and Institutional Change |
Depositing User: | Irene Crimaldi |
Date Deposited: | 23 Jul 2014 09:02 |
Last Modified: | 23 Jul 2014 09:02 |
URI: | http://eprints.imtlucca.it/id/eprint/2262 |
Available Versions of this Item
- Fluctuation Theorems for Synchronization of Interacting Polya's urns. (deposited 23 Jul 2014 09:02) [Currently Displayed]
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