Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data

In this paper, we propose to study the asymptotic properties of some conditional functional parameters, such as the distribution function, the density, and the hazard function, for an explanatory variable with values in a Hilbert space (infinite dimension) and a response variable real in a quasi-ass...

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Main Authors: Hamza Daoudi, Zouaoui Chikr Elmezouar, Fatimah Alshahrani
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/11/20/4290
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author Hamza Daoudi
Zouaoui Chikr Elmezouar
Fatimah Alshahrani
author_facet Hamza Daoudi
Zouaoui Chikr Elmezouar
Fatimah Alshahrani
author_sort Hamza Daoudi
collection DOAJ
description In this paper, we propose to study the asymptotic properties of some conditional functional parameters, such as the distribution function, the density, and the hazard function, for an explanatory variable with values in a Hilbert space (infinite dimension) and a response variable real in a quasi-associated dependency framework. We consider the non parametric estimation of the conditional distribution function by the kernel method in the presence of the quasi-associated dependence, and we establish under general hypotheses the almost complete convergence with speed of the estimator built in the associated case. The estimation of the conditional hazard function will be conducted by utilizing the two outcomes of the conditional distribution function and the conditional density. We establish the asymptotic normality of the kernel estimator as the conditional risk function of a properly normalized functional. We explicitly give the asymptotic variance. Simulation studies were conducted to investigate the behavior of the asymptotic property in the context of finite sample data. All the statistical analyses were performed using R software.
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spelling doaj.art-baa670f23d7a48d58ba901519c374d3b2023-11-19T17:13:54ZengMDPI AGMathematics2227-73902023-10-011120429010.3390/math11204290Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated DataHamza Daoudi0Zouaoui Chikr Elmezouar1Fatimah Alshahrani2Department of Electrical Engineering, College of Technology, Tahri Mohamed University, Bechar 08000, AlgeriaDepartment of Mathematics, College of Science, King Khalid University, Abha 61413, Saudi ArabiaDepartment of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi ArabiaIn this paper, we propose to study the asymptotic properties of some conditional functional parameters, such as the distribution function, the density, and the hazard function, for an explanatory variable with values in a Hilbert space (infinite dimension) and a response variable real in a quasi-associated dependency framework. We consider the non parametric estimation of the conditional distribution function by the kernel method in the presence of the quasi-associated dependence, and we establish under general hypotheses the almost complete convergence with speed of the estimator built in the associated case. The estimation of the conditional hazard function will be conducted by utilizing the two outcomes of the conditional distribution function and the conditional density. We establish the asymptotic normality of the kernel estimator as the conditional risk function of a properly normalized functional. We explicitly give the asymptotic variance. Simulation studies were conducted to investigate the behavior of the asymptotic property in the context of finite sample data. All the statistical analyses were performed using R software.https://www.mdpi.com/2227-7390/11/20/4290distribution functionasymptotic propertyconditional risk functionweak dependencefunctional data
spellingShingle Hamza Daoudi
Zouaoui Chikr Elmezouar
Fatimah Alshahrani
Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
Mathematics
distribution function
asymptotic property
conditional risk function
weak dependence
functional data
title Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
title_full Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
title_fullStr Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
title_full_unstemmed Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
title_short Asymptotic Results of Some Conditional Nonparametric Functional Parameters in High-Dimensional Associated Data
title_sort asymptotic results of some conditional nonparametric functional parameters in high dimensional associated data
topic distribution function
asymptotic property
conditional risk function
weak dependence
functional data
url https://www.mdpi.com/2227-7390/11/20/4290
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