Block bootstrap optimality and empirical block selection for sample quantiles with dependent data
Block bootstrap optimality and empirical block selection for sample quantiles with dependent data
复制标题
具有相关数据的样本分位数的块引导最优性和经验块选择
DOI:
10.1093/biomet/asaa075
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发表时间:
2020
期刊:
影响因子:
2.7
通讯作者:
Young, G A
中科院分区:
文献类型:
--
作者:
Kuffner, T A;Lee, S M;Young, G A
We establish a general theory of optimality for block bootstrap distribution estimation for sample quantiles under mild strong mixing conditions. In contrast to existing results, we study the block bootstrap for varying numbers of blocks. This corresponds to a hybrid between the sub- sampling bootstrap and the moving block bootstrap, in which the number of blocks is between 1 and the ratio of sample size to block length. The hybrid block bootstrap is shown to give theoretical benefits, and startling improvements in accuracy in distribution estimation in important practical settings. The conclusion that bootstrap samples should be of smaller size than the original sample has significant implications for computational efficiency and scalability of bootstrap methodologies with dependent data. Our main theorem determines the optimal number of blocks and block length to achieve the best possible convergence rate for the block bootstrap distribution estimator for sample quantiles. We propose an intuitive method for empirical selection of the optimal number and length of blocks, and demonstrate its value in a nontrivial example.
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影响因子:
4.5
作者:
Karl B. Gregory;S. Lahiri;D. Nordman
通讯作者:
D. Nordman
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Karl B. Gregory;S. Lahiri;D. Nordman
通讯作者:
D. Nordman
DOI:
10.1007/978-1-4757-3803-2
发表时间:
2003-08
期刊:
--
影响因子:
--
作者:
S. Lahiri
通讯作者:
S. Lahiri
影响因子:
1.1
作者:
Todd A. Kuffner;Stephen M. S. Lee;G. A. Young
通讯作者:
G. A. Young
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
R. Davis;T. Mikosch
通讯作者:
T. Mikosch