Multiple-drawing dynamic Friedman urns with opposite-reinforcement

Autor: Shuyang Gao, Rafik Aguech
Rok vydání: 2023
Předmět:
Zdroj: Probability in the Engineering and Informational Sciences. :1-15
ISSN: 1469-8951
0269-9648
DOI: 10.1017/s0269964822000535
Popis: In this study, we consider a class of multiple-drawing opposite-reinforcing urns with time-dependent replacement rules. The class has the symmetric property of a Friedman-type urn. We divide the class into a small-increment regime and a large-increment regime. For small-increment schemes, we prove almost-sure convergence and a central limit theorem for the proportion of white balls by stochastic approximation. For large-increment schemes, by assuming the affinity condition, we show almost-sure convergence of the proportion of white balls by martingale theory and present a way to identify the limit distribution of the proportion of white balls.
Databáze: OpenAIRE