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AI 根据所提供的论文材料归类:摘要集中于删失生存数据和秩回归,未明确研究因果效应、经济结构估计或所列其他特定方向。

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关注这篇论文的作者
M. Jones

加速失效时间模型的一类半参数回归方法

研究问题
右删失的加速失效时间模型如何利用线性与非线性秩检验构造多元回归估计,并评估协变量异常值的影响?
方法与思路
作者将一类非参数秩检验反演为估计方程,扩展 Theil–Sen 方法,并提出加权广义 logrank 与 logit-rank 估计。
材料陈述的贡献
摘要称,相关估计具有一致性、渐近正态性及可一致估计的方差;模拟中广义 logrank 在部分情形表现较好。
阅读关注点
应核对删失机制、权重和估计方程的定义、标准误计算方法,以及异常值模拟的设定与偏差比较范围。
阅读边界
仅据 OpenAlex 索引摘要,稿件版本未注明;摘要未给完整正则条件和模拟数值,不能推断普遍的异常值稳健性。

原文摘要

In this paper a general class of nonparametric test statistics, which includes both linear and nonlinear rank tests for the accelerated failure time model, is inverted into estimating equations for multiple regression. For right-censored data this general class of semiparametric regression procedures includes the linear rank estimators of Tsiatis (1990), extends the Theil-Sen estimator based on Kendall's τ to multiple regression, and introduces several new families of regression methods based on inverting nonlinear rank tests. These new families include the weighted generalised logrank estimators and the weighted logit-rank estimators. Several estimators of the standard errors of the regression coefficients are given. The regression coefficient estimators are consistent and asymptotically normal with variances that can be consistently estimated. Several linear and nonlinear rank-based estimators of the regression parameters and several methods of estimating their standard errors and the corresponding confidence intervals are compared in a small sample simulation in settings with and without outliers among the covariates. In these simulations the generalised logrank estimators performed well as compared to the logrank estimators when there was no outlier among the covariates and had less bias than the logrank estimators when covariate outliers existed.

笔记与分组
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