Model averaging for right censored data with measurement error

IF 1.2 3区 数学 Q3 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Zhongqi Liang, Caiya Zhang, Linjun Xu
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引用次数: 0

Abstract

This paper studies a novel model averaging estimation issue for linear regression models when the responses are right censored and the covariates are measured with error. A novel weighted Mallows-type criterion is proposed for the considered issue by introducing multiple candidate models. The weight vector for model averaging is selected by minimizing the proposed criterion. Under some regularity conditions, the asymptotic optimality of the selected weight vector is established in terms of its ability to achieve the lowest squared loss asymptotically. Simulation results show that the proposed method is superior to the other existing related methods. A real data example is provided to supplement the actual performance.

Abstract Image

具有测量误差的右删失数据的模型平均法
本文研究了线性回归模型的一个新的模型平均估算问题,即当响应是右删失的,协变量的测量是有误差的。通过引入多个候选模型,针对所考虑的问题提出了一种新的加权 Mallows 型准则。模型平均化的权重向量是通过最小化所提出的准则来选择的。在一些规则性条件下,所选权重向量的渐进最优性是指它能够达到渐进的最低平方损失。仿真结果表明,所提出的方法优于其他现有的相关方法。我们还提供了一个真实数据示例来补充实际性能。
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来源期刊
Lifetime Data Analysis
Lifetime Data Analysis 数学-数学跨学科应用
CiteScore
2.30
自引率
7.70%
发文量
43
审稿时长
3 months
期刊介绍: The objective of Lifetime Data Analysis is to advance and promote statistical science in the various applied fields that deal with lifetime data, including: Actuarial Science – Economics – Engineering Sciences – Environmental Sciences – Management Science – Medicine – Operations Research – Public Health – Social and Behavioral Sciences.
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