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Simple resampling methods of approximating the distribution of LAD estimators for doubly censored regression models. (English) Zbl 1271.62154

Summary: Recently, least absolute deviation (LAD) estimator for median regression models with doubly censored data was proposed and the asymptotic normality of the estimator was established, and the methods based on bootstrap and random weighting were proposed respectively to approximate the distribution of the LAD estimators. But the calculation of the estimators requires solving a non-convex and non-smooth minimization problem, resulting in high computational costs in implementing the bootstrap or random weighting method directly. In this paper, computationally simple resampling methods are proposed to approximate the distribution of the doubly censored LAD estimators. The objective functions in the resampling stage of the new methods are piece-wise linear and convex, and their minimizer can be obtained by the linear programming in the same way as that for the case of uncensored median regression.

MSC:

62J05 Linear regression; mixed models
62N01 Censored data models
62G09 Nonparametric statistical resampling methods

Software:

bootstrap
Full Text: DOI

References:

[1] Anderson, P. K.; Gill, R. D., Cox’s regression model for counting process: a large sample study, Ann. Statist., 10, 1100-1120 (1982) · Zbl 0526.62026
[2] Bilias, Y.; Chen, S.; Ying, Z., Simple resampling methods for censored regression quantiles, J. Econometrics, 99, 373-386 (2000) · Zbl 1076.62567
[3] Chen, K.; Zhou, M., Non-parametric hypothesis testing and confidence intervals with doubly censored data, Lifetime Data Anal., 9, 71-91 (2003) · Zbl 1116.62342
[4] Efron, B.; Tibshirani, R., An Introduction to the Bootstrap (1993), Chapman & Hall, CRC · Zbl 0835.62038
[5] Fang, Y.; Zhao, L., Approximation to the distribution of LAD estimators for censored regression by random weighting method, J. Statist. Plann. Inference, 136, 1302-1316 (2006) · Zbl 1156.62347
[6] Peto, R., Experimental survival curves for interval censored data, J. Roy. Statist. Soc. Ser. C, 22, 86-91 (1973)
[7] Pollard, D., Empirical Processes: Theory and Applications (1990), IMS: IMS Hayward, CA · Zbl 0741.60001
[8] Powell, J. L., Least absolute deviations estimation for the censored regression model, J. Econometrics, 25, 303-325 (1984) · Zbl 0571.62100
[9] Rao, C. R.; Zhao, L. C., Asymptotic normility of LAD estimator in censored regression models, Math. Methods Statist., 2, 3, 228-239 (1993) · Zbl 0798.62034
[10] Ren, J.; Gu, M., Regression \(M\)-estimators with doubly censored data, Ann. Statist., 25, 2638-2664 (1997) · Zbl 0907.62045
[11] Turnbull, B. W., Nonparametric estimation of a survivorship function with doubly censored data, J. Amer. Statist. Assoc., 69, 169-173 (1974) · Zbl 0281.62044
[12] Ying, Z.; Jung, S. H.; Wei, L. J., Survival analysis with median regression models, J. Amer. Statist. Assoc., 90, 178-184 (1995) · Zbl 0818.62103
[13] Zhou, X. Q.; Shi, N. Z., Methods of statistical inference for median regression models with doubly censored data, Comm. Statist. Theory Methods, 39, 3140-3152 (2010) · Zbl 1201.62046
[14] Zhou, X. Q.; Wang, J. D., LAD estimation for nonlinear regression models with randomly censored data, Sci. China Ser. A, 48, 880-897 (2005) · Zbl 1092.62067
[15] Zhou, X. Q.; Wang, J. D., LAD estimation for multiple regression models with doubly censored data, Comm. Statist. Theory Methods, 39, 117-129 (2010) · Zbl 1182.62048
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