Article Dans Une Revue Stochastic Processes and their Applications Année : 2020

From infinite urn schemes to self-similar stable processes

Résumé

We investigate the randomized Karlin model with parameter $\beta\in(0,1)$, which is based on an infinite urn scheme. It has been shown before that when the randomization is bounded, the so-called odd-occupancy process scales to a fractional Brownian motion with Hurst index $\beta/2\in(0,1/2)$. We show here that when the randomization is heavy-tailed with index $\alpha\in(0,2)$, then the odd-occupancy process scales to a $(\beta/\alpha)$-self-similar symmetric $\alpha$-stable process with stationary increments.

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Cite 10.1016/j.spa.2019.07.008 Autre Durieu, O., Samorodnitsky, G., & Wang, Y. (2020). From infinite urn schemes to self-similar stable processes. Stochastic Processes and Their Applications, 130(4), 2471–2487. https://doi.org/10.1016/j.spa.2019.07.008

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hal-01622790 , version 1 (24-10-2017)

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Olivier Durieu, Gennady Samorodnitsky, Yizao Wang. From infinite urn schemes to self-similar stable processes. Stochastic Processes and their Applications, 2020. ⟨hal-01622790⟩
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