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Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data

Year 2019, Volume: 48 Issue: 1, 290 - 311, 01.02.2019

Abstract

In survival or reliability studies, it is common to deal with data which are not only incomplete but weakly dependent too. Random right-censoring and random left-truncation are two common forms of such data when they are neither independent nor strongly mixing but rather associated.  In this paper, we focus on  kernel estimation of the conditional quantile function of a strictly stationary associated random variable $T$ given a $d$-dimensional vector of covariates $X$, under random right-censoring. As main results, we establish a strong uniform consistency rate for the estimator. Then the finite sample performance of the estimator is illustrated on a simulation study.

References

  • Abberger, K. Quantile smoothing in financial time series, Statist. Papers 38, 125-148, 1997.
  • Bhattacharya, P.K. and Gangopadhyay, A. Kernel and nearest neighbour estimation of conditional quantile, Ann. Statist. 18, 1400-1415, 1990.
  • Bulinski, A. and Shashkin, A. Limit theorems for associated random fields and related systems, Vol 10, Advanced series on statistical science & applied probability, World Scientific, Singapore, 2007.
  • Cai, Z. Asymptotic properties of Kaplan-Meier estimator for censored dependent data, Statist. Probab. Lett. 37, 381-389, 1998.
  • Cai, Z. and Roussas, G.G. Kaplan-Meier estimator under association, J. Multivariate Anal. 67, 318-348, 1998.
  • Chaudhuri, P., Doksum, K. and Samarov, A. On average derivative quantile regression, Ann. Statist. 25, 715-744, 1997.
  • Dabrowska, D. Nonparametric quantile regression with censored data, Sankhya A 54, 252-259, 1992.
  • Doukhan, P. Mixing: Properties and Examples, Lect. Notes in Statist. 61, Springer Verlag, 1994.
  • Doukhan, P. and Louhichi, S. A new weak dependence condition and applications to moment inequalities, Stochastic Process. Appl. 84, 313-342, 1999.
  • Doukhan, P. and Neumann, M. Probability and moment inequalities for sums of weakly dependent random variables, with applications, Stochastic Process. Appl. 117, 878-903, 2007.
  • Esary, J., Proschan, F. and Walkup, D. Association of random variables with applications, Ann. Math. Statist. 38, 1466-1476, 1967.
  • Honda, T. Nonparametric estimation of a conditional quantile for strong mixing processes, Ann. Inst. Statist. Math. 52, 459--470, 2000.
  • Kaplan, E.M. and Meier, P. Nonparametric estimation from incomplete observations, J. Amer. Statist. Assoc. 53, 457-481, 1958.
  • Koul, H., Susarla, V. and Van Ryzin, J. Regression analysis with randomly right censored data, Ann. Statist. 9, 1276-1288, 1981.
  • Liang, H.-Y. and de Una-Alvarez, J. Asymptotic properties of conditional quantile estimator for censored dependent observations, Ann. Inst. Statist. Math. 63, 267-289, 2011.
  • Mehra, K.L., Rao M.S. and Upadrasta S.P. A smooth conditional quantile estimator and related applications of conditional empirical processes, J. Multivariate Anal. 37, 151-179, 1991.
  • Menni, N. and Tatachak, A. A note on estimating the conditional expectation under censoring and association: strong uniform consistency, Statist. Papers, DOI:10.1007/s00362-016-0801-8, 2016.
  • Newman, C.M. Asymptotic independence and limit theorems for positively and negatively dependent random variables, in: Tong, Y.L. (Ed.) Inequalities in statistics and probability, IMS Lecture Notes-Monograph Series, vol. 5, Hayward, CA, 127-140, 1984.
  • Oliveira, P.E. Asymptotics for Associated Random Variables, Springer Verlag, 2012.
  • Ould Said, E. A strong uniform convergence rate of kernel conditional quantile estimator under random censorship, Statist. Probab. Lett. 76, 579-586, 2006.
  • Ould Said, E. and Sadki, O. Prediction via the conditional quantile for right censorship model, Far East Journal of Theoretical Statistics 25, 145-179, 2008.
  • Ould Said, E. and Sadki, O. Strong approximation of quantile function for strong mixing and censored processes, Comm. Statist. Theory Methods 34, 1449-1459, 2005.
  • Prakasa Rao, B.L.S. Associated Sequences, Demimartingales and Nonparametric Inference, Probability and its Applications, Springer Basel AG, 2012.
  • Qin, Y.S. and Wu, Y. An estimator of a conditional quantile in the presence of auxiliary information, J. Statist. Plann. Inference 99, 59-70, 2001.
  • Samanta, M. Nonparametric estimation of conditional quantiles, Statist. Probab. Lett. 7, 407-412, 1989.
  • Stute, W. and Wang, J.L. The strong law under random censorship, Ann. Statist. 21, 1591-1607, 1993.
  • Xiang, X. A kernel estimator of a conditional quantile, J. Multivariate Anal. 59, 206-216, 1996.
  • Yu, K. and Jones, M.C. Local linear quantile regression, J. Amer. Statist. Assoc. 93, 228-238, 1998.
Year 2019, Volume: 48 Issue: 1, 290 - 311, 01.02.2019

Abstract

References

  • Abberger, K. Quantile smoothing in financial time series, Statist. Papers 38, 125-148, 1997.
  • Bhattacharya, P.K. and Gangopadhyay, A. Kernel and nearest neighbour estimation of conditional quantile, Ann. Statist. 18, 1400-1415, 1990.
  • Bulinski, A. and Shashkin, A. Limit theorems for associated random fields and related systems, Vol 10, Advanced series on statistical science & applied probability, World Scientific, Singapore, 2007.
  • Cai, Z. Asymptotic properties of Kaplan-Meier estimator for censored dependent data, Statist. Probab. Lett. 37, 381-389, 1998.
  • Cai, Z. and Roussas, G.G. Kaplan-Meier estimator under association, J. Multivariate Anal. 67, 318-348, 1998.
  • Chaudhuri, P., Doksum, K. and Samarov, A. On average derivative quantile regression, Ann. Statist. 25, 715-744, 1997.
  • Dabrowska, D. Nonparametric quantile regression with censored data, Sankhya A 54, 252-259, 1992.
  • Doukhan, P. Mixing: Properties and Examples, Lect. Notes in Statist. 61, Springer Verlag, 1994.
  • Doukhan, P. and Louhichi, S. A new weak dependence condition and applications to moment inequalities, Stochastic Process. Appl. 84, 313-342, 1999.
  • Doukhan, P. and Neumann, M. Probability and moment inequalities for sums of weakly dependent random variables, with applications, Stochastic Process. Appl. 117, 878-903, 2007.
  • Esary, J., Proschan, F. and Walkup, D. Association of random variables with applications, Ann. Math. Statist. 38, 1466-1476, 1967.
  • Honda, T. Nonparametric estimation of a conditional quantile for strong mixing processes, Ann. Inst. Statist. Math. 52, 459--470, 2000.
  • Kaplan, E.M. and Meier, P. Nonparametric estimation from incomplete observations, J. Amer. Statist. Assoc. 53, 457-481, 1958.
  • Koul, H., Susarla, V. and Van Ryzin, J. Regression analysis with randomly right censored data, Ann. Statist. 9, 1276-1288, 1981.
  • Liang, H.-Y. and de Una-Alvarez, J. Asymptotic properties of conditional quantile estimator for censored dependent observations, Ann. Inst. Statist. Math. 63, 267-289, 2011.
  • Mehra, K.L., Rao M.S. and Upadrasta S.P. A smooth conditional quantile estimator and related applications of conditional empirical processes, J. Multivariate Anal. 37, 151-179, 1991.
  • Menni, N. and Tatachak, A. A note on estimating the conditional expectation under censoring and association: strong uniform consistency, Statist. Papers, DOI:10.1007/s00362-016-0801-8, 2016.
  • Newman, C.M. Asymptotic independence and limit theorems for positively and negatively dependent random variables, in: Tong, Y.L. (Ed.) Inequalities in statistics and probability, IMS Lecture Notes-Monograph Series, vol. 5, Hayward, CA, 127-140, 1984.
  • Oliveira, P.E. Asymptotics for Associated Random Variables, Springer Verlag, 2012.
  • Ould Said, E. A strong uniform convergence rate of kernel conditional quantile estimator under random censorship, Statist. Probab. Lett. 76, 579-586, 2006.
  • Ould Said, E. and Sadki, O. Prediction via the conditional quantile for right censorship model, Far East Journal of Theoretical Statistics 25, 145-179, 2008.
  • Ould Said, E. and Sadki, O. Strong approximation of quantile function for strong mixing and censored processes, Comm. Statist. Theory Methods 34, 1449-1459, 2005.
  • Prakasa Rao, B.L.S. Associated Sequences, Demimartingales and Nonparametric Inference, Probability and its Applications, Springer Basel AG, 2012.
  • Qin, Y.S. and Wu, Y. An estimator of a conditional quantile in the presence of auxiliary information, J. Statist. Plann. Inference 99, 59-70, 2001.
  • Samanta, M. Nonparametric estimation of conditional quantiles, Statist. Probab. Lett. 7, 407-412, 1989.
  • Stute, W. and Wang, J.L. The strong law under random censorship, Ann. Statist. 21, 1591-1607, 1993.
  • Xiang, X. A kernel estimator of a conditional quantile, J. Multivariate Anal. 59, 206-216, 1996.
  • Yu, K. and Jones, M.C. Local linear quantile regression, J. Amer. Statist. Assoc. 93, 228-238, 1998.
There are 28 citations in total.

Details

Primary Language English
Subjects Statistics
Journal Section Statistics
Authors

Wafaa Djelladj This is me

Abdelkader Tatachak

Publication Date February 1, 2019
Published in Issue Year 2019 Volume: 48 Issue: 1

Cite

APA Djelladj, W., & Tatachak, A. (2019). Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data. Hacettepe Journal of Mathematics and Statistics, 48(1), 290-311.
AMA Djelladj W, Tatachak A. Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data. Hacettepe Journal of Mathematics and Statistics. February 2019;48(1):290-311.
Chicago Djelladj, Wafaa, and Abdelkader Tatachak. “Strong Uniform Consistency of a Kernel Conditional Quantile Estimator for Censored and Associated Data”. Hacettepe Journal of Mathematics and Statistics 48, no. 1 (February 2019): 290-311.
EndNote Djelladj W, Tatachak A (February 1, 2019) Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data. Hacettepe Journal of Mathematics and Statistics 48 1 290–311.
IEEE W. Djelladj and A. Tatachak, “Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data”, Hacettepe Journal of Mathematics and Statistics, vol. 48, no. 1, pp. 290–311, 2019.
ISNAD Djelladj, Wafaa - Tatachak, Abdelkader. “Strong Uniform Consistency of a Kernel Conditional Quantile Estimator for Censored and Associated Data”. Hacettepe Journal of Mathematics and Statistics 48/1 (February 2019), 290-311.
JAMA Djelladj W, Tatachak A. Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data. Hacettepe Journal of Mathematics and Statistics. 2019;48:290–311.
MLA Djelladj, Wafaa and Abdelkader Tatachak. “Strong Uniform Consistency of a Kernel Conditional Quantile Estimator for Censored and Associated Data”. Hacettepe Journal of Mathematics and Statistics, vol. 48, no. 1, 2019, pp. 290-11.
Vancouver Djelladj W, Tatachak A. Strong uniform consistency of a kernel conditional quantile estimator for censored and associated data. Hacettepe Journal of Mathematics and Statistics. 2019;48(1):290-311.