The Berry‐Esseen bound for Studentized U‐statistics

The Berry‐Esseen bound for Studentized U‐statistics
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Berry‐Esseen 走向学生化 U 统计

DOI:
10.2307/3315169
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发表时间:
1985
期刊:
影响因子:
--
通讯作者:
R. Helmers
R. Helmers
中科院分区:
--
文献类型:
--
作者:
R. Helmers

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Callaert 和 Veraverbeke (1981) 最近获得了二阶学生化非简并 U 统计量的 n–1/2 阶 Berry-Esseen 型界。这些作者获得这个阶数界所需的条件是核 h 的 4.5 阶绝对矩的有限性。在本文中,表明对于某些 ϵ > 0,该假设可以弱化为核 h 的有限 (4 + ϵ) 绝对矩。我们的证明类似于 Helmers 和 van Zwet (1982) 的一部分,其中为 Student t 统计量获得了类似的结果。本说明将其扩展到学生化 U 统计。
Callaert and Veraverbeke (1981) recently obtained a Berry-Esseen-type bound of order n–1/2 for Studentized nondegenerate U-statistics of degree two. The condition these authors need to obtain this order bound is the finiteness of the 4.5th absolute moment of the kernel h. In this note it is shown that this assumption can be weakened to that of a finite (4 + ϵ)th absolute moment of the kernel h, for some ϵ > 0. Our proof resembles part of Helmers and van Zwet (1982), where an analogous result is obtained for the Student t-statistic. The present note extends this to Studentized U-statistics.