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Article Dans Une Revue ALEA : Latin American Journal of Probability and Mathematical Statistics Année : 2013

Strongly Vertex-Reinforced-Random-Walk on a complete graph

Résumé

We study Vertex-Reinforced-Random-Walk (VRRW) on a complete graph with weights of the form w(n) = n α , with α > 1. Unlike for the Edge-Reinforced-Random-Walk, which in this case localizes a.s. on 2 sites, here we observe various phase transitions, and in particular localization on arbitrary large sets is possible, provided α is close enough to 1. Our proof relies on stochastic approximation techniques. At the end of the paper, we also prove a general result ensuring that any strongly reinforced VRRW on any bounded degree graph localizes a.s. on a finite subgraph.
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Dates et versions

hal-01490009 , version 1 (15-03-2017)

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  • HAL Id : hal-01490009 , version 1

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Michel Benaim, Olivier Raimond, Bruno Schapira. Strongly Vertex-Reinforced-Random-Walk on a complete graph. ALEA : Latin American Journal of Probability and Mathematical Statistics, 2013, 10, pp.767 - 782. ⟨hal-01490009⟩
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