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热度 5已有 259 次阅读2010-8-29 12:46 |个人分类:基础科学

Methods of Statistical Inference for Median Regression Models with Doubly Censored Data 

Authors: Xiuqing Zhoua; Ningzhong Shib
Affiliations:   a School of Mathematical Sciences, Nanjing Normal University, Nanjing, P.R. China
b KLAS and School of Mathematics and Statistics, Northeast Normal University, Changchun, P.R. China
DOI: 10.1080/03610920903200009
Publication Frequency: 20 issues per year
Published in: journal Communications in Statistics - Theory and Methods, Volume 39, Issue 17 January 2010 , pages 3140 - 3152
Formats available: HTML (English) : PDF (English)
Previously published as: Communications in Statistics (0090-3272) until 1976
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Abstract

Recently, least absolute deviations (LAD) estimator for median regression models with doubly censored data was proposed and the asymptotic normality of the estimator was established. However, it is invalid to make inference on the regression parameter vectors, because the asymptotic covariance matrices are difficult to estimate reliably since they involve conditional densities of error terms. In this article, three methods, which are based on bootstrap, random weighting, and empirical likelihood, respectively, and do not require density estimation, are proposed for making inference for the doubly censored median regression models. Simulations are also done to assess the performance of the proposed methods.
Keywords: Bootstrap; Doubly censored data; Empirical likelihood; LAD estimator; Median regression model; Random weighting
Mathematics Subject Classification: 62N01; 62G20

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