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SURE estimates under dependence and heteroscedasticity
Kong, Xinbing1; Liu, Zhi2; Zhao, Peng3; Zhou, Wang4
2017-09
Source PublicationJOURNAL OF MULTIVARIATE ANALYSIS
ABS Journal Level3
ISSN0047-259X
Volume161Pages:1-11
Abstract

The multivariate Bayesian hierarchical model with independent means has been studied extensively and is widely used in practice. In contrast, the case of dependent means has received scant attention, even though multivariate observations are often correlated. In this paper, we investigate a multivariate heteroscedastic Bayesian hierarchical model in which an informative prior with equicorrelated means is assumed. We estimate the mean vector by the shrinkage estimator based on Stein's unbiased risk estimation (SURE). It is shown that the squared error loss of the SURE estimator is close to that of an oracle estimator as the number of means grows. Our SURE estimator includes the SURE estimator under independence considered by Xie et al. (2012) as a special case. The finite-sample performance of our estimator is explored via simulations and two real data sets are used for illustration purposes. (C) 2017 Elsevier Inc. All rights reserved.

KeywordHeteroscedasticity Shrinkage Estimator Sure
DOI10.1016/j.jmva.2017.07.001
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMathematics
WOS SubjectStatistics & Probability
WOS IDWOS:000411780000001
PublisherELSEVIER INC
The Source to ArticleWOS
Scopus ID2-s2.0-85026381239
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF MATHEMATICS
Affiliation1.Nanjing Audit Univ, Sch Sci, Nanjing, Jiangsu, Peoples R China
2.Univ Macau, Dept Math, Macau, Peoples R China
3.Jiangsu Normal Univ, Sch Math & Stat, Xuzhou, Peoples R China
4.Natl Univ Singapore, Dept Stat & Appl Probabil, Singapore, Singapore
Recommended Citation
GB/T 7714
Kong, Xinbing,Liu, Zhi,Zhao, Peng,et al. SURE estimates under dependence and heteroscedasticity[J]. JOURNAL OF MULTIVARIATE ANALYSIS, 2017, 161, 1-11.
APA Kong, Xinbing., Liu, Zhi., Zhao, Peng., & Zhou, Wang (2017). SURE estimates under dependence and heteroscedasticity. JOURNAL OF MULTIVARIATE ANALYSIS, 161, 1-11.
MLA Kong, Xinbing,et al."SURE estimates under dependence and heteroscedasticity".JOURNAL OF MULTIVARIATE ANALYSIS 161(2017):1-11.
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