Sparse Identification and Estimation of Large-Scale Vector AutoRegressive Moving Averages
Sparse Identification and Estimation of Large-Scale Vector AutoRegressive Moving Averages
复制标题
大规模向量自回归移动平均线的稀疏识别和估计
DOI:
10.1080/01621459.2021.1942013
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发表时间:
2021
影响因子:
3.7
通讯作者:
Matteson, David S.
中科院分区:
文献类型:
--
作者:
Wilms, Ines;Basu, Sumanta;Bien, Jacob;Matteson, David S.
The vector autoregressive moving average (VARMA) model is fundamental to the theory of multivariate time series; however, identifiability issues have led practitioners to abandon it in favor of the simpler but more restrictive vector autoregressive (VAR) model. We narrow this gap with a new optimization-based approach to VARMA identification built upon the principle of parsimony. Among all equivalent data-generating models, we use convex optimization to seek the parameterization that is simplest in a certain sense. A user-specified strongly convex penalty is used to measure model simplicity, and that same penalty is then used to define an estimator that can be efficiently computed. We establish consistency of our estimators in a double-asymptotic regime. Our nonasymptotic error bound analysis accommodates both model specification and parameter estimation steps, a feature that is crucial for studying large-scale VARMA algorithms. Our analysis also provides new results on penalized estimation of infinite-order VAR, and elastic net regression under a singular covariance structure of regressors, which may be of independent interest. We illustrate the advantage of our method over VAR alternatives on three real data examples.
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影响因子:
1.3
作者:
J. Bien;Irina Gaynanova;Johannes Lederer;Christian L. Müller
通讯作者:
Christian L. Müller
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Jesús Fernández;J. Rubio;T. Sargent;M. Watson
通讯作者:
M. Watson
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Jean;Tarek Jouini
通讯作者:
Tarek Jouini
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
J. Stock;M. Watson
通讯作者:
M. Watson
影响因子:
6.8
作者:
AKAIKE, H
通讯作者:
AKAIKE, H