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Bias-corrected quantile regression estimation of censored regression models

机译:修正回归模型的偏差校正分位数回归估计

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摘要

In this paper, an extension of the indirect inference methodology to semiparametric estimation is explored in the context of censored regression. Motivated by weak small-sample performance of the censored regression quantile estimator proposed by Powell (J Econom 32:143–155, 1986a), two- and three-step estimation methods were introduced for estimation of the censored regression model under conditional quantile restriction. While those stepwise estimators have been proven to be consistent and asymptotically normal, their finite sample performance greatly depends on the specification of an initial estimator that selects the subsample to be used in subsequent steps. In this paper, an alternative semiparametric estimator is introduced that does not involve a selection procedure in the first step. The proposed estimator is based on the indirect inference principle and is shown to be consistent and asymptotically normal under appropriate regularity conditions. Its performance is demonstrated and compared to existing methods by means of Monte Carlo simulations.
机译:本文在删失回归的背景下探索了间接推理方法向半参数估计的扩展。受鲍威尔(J Econom 32:143-155,1986a)提出的删失回归分位数估计量的弱小样本性能的影响,引入了两步和三步估计方法来对有条件分位数限制下的删失回归模型进行估计。尽管已证明这些逐步估计量是一致的且渐近正态的,但它们的有限样本性能在很大程度上取决于初始估计量的规格,该初始估计量选择了要在后续步骤中使用的子样本。在本文中,介绍了一种替代的半参数估计器,该估计器在第一步中不涉及选择过程。所提出的估计器基于间接推理原理,在适当的规则性条件下被证明是一致且渐近正态的。通过蒙特卡洛仿真证明了其性能并将其与现有方法进行了比较。

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