Consistency of a hybrid block bootstrap for distribution and variance
estimation for sample quantiles of weakly dependent sequences
estimation for sample quantiles of weakly dependent sequences
File(s)peter-ANZJS%28v11%29-2.pdf (298.29 KB)
Accepted version
Author(s)
Young, GA
Lee, Stephen
Kuffner, Todd
Type
Journal Article
Abstract
Consistency and optimality of block bootstrap schemes for distribution and variance estimation of smooth functionals of dependent data have been thoroughly investigated by Hall, Horowitz & Jing (1995), among others. However, for nonsmooth functionals, such as quantiles, much less is known. Existing results, due to Sun & Lahiri (2006), regarding strong consistency for distribution and variance estimation via the moving block bootstrap (MBB) require that b→∞, where b=⌊n/ℓ⌋ is the number of resampled blocks to be pasted together to form the bootstrap data series, n is the available sample size, and ℓ is the block length. Here we show that, in fact, weak consistency holds for any b such that 1≤b=O(n/ℓ). In other words we show that a hybrid between the subsampling bootstrap (b=1) and MBB is consistent. Empirical results illustrate the performance of hybrid block bootstrap estimators for varying numbers of blocks.
Date Issued
2018-03-14
Date Acceptance
2017-03-18
Citation
Australian and New Zealand Journal of Statistics, 2018, 60 (1), pp.103-114
ISSN
1369-1473
Publisher
Wiley
Start Page
103
End Page
114
Journal / Book Title
Australian and New Zealand Journal of Statistics
Volume
60
Issue
1
Copyright Statement
© 2018 Australian Statistical Publishing Association Inc. Published by John Wiley & Sons Australia Pty Ltd.
Subjects
Science & Technology
Physical Sciences
Statistics & Probability
Mathematics
asymptotics
nonsmooth functional
resampling
strong mixing
subsampling
STATIONARY OBSERVATIONS
VALUES
0104 Statistics
1403 Econometrics
Publication Status
Published
Date Publish Online
2018-03-14