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arXiv 2101.09307math.PR
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双参数Fleming-Viot扩散中的秩质量

Ranked masses in two-parameter Fleming-Viot diffusions

Noah Forman, Soumik Pal, Douglas Rizzolo, Matthias Winkel

摘要:

在以前的工作中,我们构造了Fleming-Viot型测度值扩散(和单位区间$[0,1]$的区间划分空间上的扩散),它们具有Poisson-Dirichlet定律,参数为$α\in(0,1)$和$θ\geq 0$。在本文中,我们完成了证明,这些过程解决了冯和孙(2010年)的猜想,通过显示这些扩散的排序原子大小(或排序间隔长度)的过程是由彼得罗夫(2009年)引入的双参数扩散族的成员,扩展了$α=0$情况下的模型。后一种扩散是上下中餐馆过程的连续极限。

英文摘要:

In previous work, we constructed Fleming--Viot-type measure-valued diffusions (and diffusions on a space of interval partitions of the unit interval $[0,1]$) that are stationary with the Poisson--Dirichlet laws with parameters $α\in(0,1)$ and $θ\geq 0$. In this paper, we complete the proof that these processes resolve a conjecture by Feng and Sun (2010) by showing that the processes of ranked atom sizes (or of ranked interval lengths) of these diffusions are members of a two-parameter family of diffusions introduced by Petrov (2009), extending a model by Ethier and Kurtz (1981) in the case $α=0$. The latter diffusions are continuum limits of up-down Chinese restaurant processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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