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AI 根据所提供的论文材料归类:摘要研究几何分布滞后模型的动态参数及其抽样分布,依据明确的滞后结构归入时间序列方向,具体经济应用背景则未说明。

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关注这篇论文的作者
John L. Scadding

几何分布滞后参数的Liviatan估计量的抽样分布

研究问题
几何分布滞后参数的Liviatan估计量在小样本中具有怎样的抽样分布,如何通过直观的表达式理解其性质并讨论置信限?
方法与思路
作者将该滞后参数估计量表示为两个OLS估计量之比,在误差独立同分布且正态的假设下推导小样本分布,并讨论Fieller式置信限。
材料陈述的贡献
摘要所述主要结果是将几何滞后参数估计量写为两个OLS估计量之比,进而导出其小样本分布,并简要讨论置信限问题。
阅读关注点
核对两个OLS估计量的具体定义、比值分布推导及正态假设的作用,并检查Fieller式置信限讨论所需的条件与适用范围。
阅读边界
分布推导依赖独立同分布正态误差;摘要未说明偏离该设定时是否仍成立,也未给出置信限覆盖率或与替代方法的比较结果。

原文摘要

THE USE OF the geometric distributed lag in economics is widespread. The Liviatan [6] method for estimating its parameters is simple and provides consistent estimates. Moreover, it can be used to provide initial estimates for more sophisticated techniques [2]. Not much is known about the statistical properties of these estimators, especially their small sample properties. We do know that their asymptotic efficiencies are inferior to most alternatives [1], and recently Nagar and Gupta [7] have provided approximations to the small sample biases. The purpose of this note is to derive a simple way of displaying the Liviatan estimators which makes their nature clear and which allows the small sample distribution of one of them to be easily deduced. The main result is that the estimator of the parameter which defines the geometric distributed lag is a ratio of two ordinary least squares estimators. With this and the assumption that the error terms form a sequence of independent, identically distributed normal variables, it is possible, using the work of Geary [4], to derive the small sample distribution of this estimator. This result forms the main part of this note, which concludes with a brief discussion of the problem of setting confidence limits along the lines suggested by Fieller [3].

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