模拟爆炸性二阶自回归中单位根似然比检验的性质

Simulating Properties of the Likelihood Ratio Test for a Unit Root in an Explosive Second-Order Autoregression

Econometric Reviews · 2007
被引 2
人大 A-ABS 3

中文导读

提供了一种准确模拟爆炸性自回归过程的方法,并用于分析单位根在爆炸性二阶自回归过程中似然比检验统计量的分布,解决了以往模拟中数值不准确的问题。

Abstract

This paper provides a means of accurately simulating explosive autoregressive processes and uses this method to analyze the distribution of the likelihood ratio test statistic for an explosive second-order autoregressive process of a unit root. While the standard Dickey–Fuller distribution is known to apply in this case, simulations of statistics in the explosive region are beset by the magnitude of the numbers involved, which cause numerical inaccuracies. This has previously constituted a bar on supporting asymptotic results by means of simulation, and analyzing the finite sample properties of tests in the explosive region.

单位根检验似然比检验爆炸性自回归二阶自回归