arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1710.01554math.PR
收藏

无界可交换对正规与非正规逼近的Berry-Esseen界

Berry-Esseen Bounds of Normal and Non-normal Approximation for Unbounded Exchangeable Pairs

Qi-Man Shao, Zhuo-Song Zhang

摘要:

在Stein方法的正态和非正态近似中,通常采用可交换对方法。它已被成功地用于识别极限分布,并提供了一个近似误差。然而,当可交换对的差不受小的确定性常数限制时,误差界往往不是最优的。本文利用Stein方法中的可交换对方法,对任意随机变量建立了一个新的Berry-Esseen界,它不需要可交换对的差的界.将所得结果应用于包括二次型、广义Curie-Weiss模型、平均场Heisenberg模型和有色图模型在内的各种实例,得到了正规和非正规逼近的最优收敛速度.

英文摘要:

An exchangeable pair approach is commonly taken in the normal and non-normal approximation using Stein's method. It has been successfully used to identify the limiting distribution and provide an error of approximation. However, when the difference of the exchangeable pair is not bounded by a small deterministic constant, the error bound is often not optimal. In this paper, using the exchangeable pair approach of Stein's method, a new Berry-Esseen bound for an arbitrary random variable is established without a bound on the difference of the exchangeable pair. An optimal convergence rate for normal and non-normal approximation is achieved when the result is applied to various examples including the quadratic forms, general Curie-Weiss model, mean field Heisenberg model and colored graph model.

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。

↑