Two-step adaptive model selection for vector autoregressive processes

Two-step adaptive model selection for vector autoregressive processes
复制标题

向量自回归过程的两步自适应模型选择

DOI:
10.1016/j.jmva.2013.01.004
复制
发表时间:
2013-04
影响因子:
1.6
通讯作者:
Zhang, Xinsheng
Zhang, Xinsheng
中科院分区:
数学2区
文献类型:
--
作者:
Ren, Yunwen;Xiao, Zhiguo;Zhang, Xinsheng

文献摘要

参考文献

相似文献

模型选择(滞后阶数选择和系数矩阵子结构确定)是向量自回归(VAR)模型统计分析的重要组成部分。本文提出了一种选择VAR模型的两步收缩方法。该方法可以通过一个简单的算法来实现。得到的估计量是无偏的,子集选择相容的,且真参数向量的非零分量的估计量服从渐近正态分布。有限样本蒙特卡罗研究表明,该方法在滞后阶数估计、预测和脉冲响应分析方面的精度优于现有的方法。我们还将所提出的方法应用于一个多变量的宏观经济时间序列。
Model selection (lag order selection and coefficient matrices substructures determination) is an integral part of statistical analysis of vector autoregression (VAR) models. This paper proposes a two-step shrinkage method for VAR model selection. The proposed method can be implemented through a simple algorithm. The resulting estimator is unbiased and subset-selection consistent, and the estimator of the nonzero components of the true parameter vector has asymptotically normal distribution. Limited finite sample Monte Carlo studies suggest that the proposed method outperforms existing alternatives in terms of accuracy in lag order estimation, forecasting and impulse response analysis. We also apply the proposed method to a multivariate macroeconomic time series for illustration.
DOI: 10.1016/j.csda.2007.12.004
发表时间: 2008-03
期刊: Comput. Stat. Data Anal.
影响因子: --
作者:
Nan-Jung Hsu;Hung Hung-Hung;Ya-Mei Chang
通讯作者: Nan-Jung Hsu;Hung Hung-Hung;Ya-Mei Chang
DOI: 10.1214/09-aos729
发表时间: 2010-04-01
影响因子: 4.5
作者:
Zhang, Cun-Hui
通讯作者: Zhang, Cun-Hui
DOI: 10.1080/07350015.2000.10524846
发表时间: 2000-01
影响因子: 3
作者:
L. Kilian;U. Demiroğlu
通讯作者: L. Kilian;U. Demiroğlu
DOI: 10.1016/0169-2070(89)90043-5
发表时间: 1989-01-01
影响因子: 7.9
作者:
HAFER, RW;SHEEHAN, RG
通讯作者: SHEEHAN, RG
DOI: 10.1214/08-aos625
发表时间: 2009
影响因子: 4.5
作者:
Zou H;Zhang HH
通讯作者: Zhang HH