Stein-like 2SLS estimator
Stein-like 2SLS estimator
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类 Stein 2SLS 估计器
DOI:
10.1080/07474938.2017.1307579
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发表时间:
2017
影响因子:
1.2
通讯作者:
Hansen, Bruce E.
中科院分区:
文献类型:
--
作者:
Hansen, Bruce E.
Maasoumi proposed a Stein-like estimator for simultaneous equations and showed that his Stein shrinkage estimator has bounded finite sample risk, unlike the three-stage least square estimator. We revisit his proposal by investigating Stein-like shrinkage in the context of two-stage least square (2SLS) estimation of a structural parameter. Our estimator follows Maasoumi in taking a weighted average of the 2SLS and ordinary least square estimators, with the weight depending inversely on the Hausman statistic for exogeneity. Using a local-to-exogenous asymptotic theory, we derive the asymptotic distribution of the Stein estimator and calculate its asymptotic risk. We find that if the number of endogenous variables exceeds 2, then the shrinkage estimator has strictly smaller risk than the 2SLS estimator, extending the classic result of James and Stein . In a simple simulation experiment, we show that the shrinkage estimator has substantially reduced finite sample median squared error relative to the standard 2SLS estimator.
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DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
T. Sawa
通讯作者:
T. Sawa
影响因子:
0.8
作者:
B. Hansen
通讯作者:
B. Hansen
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
A. Ullah;V. K. Smvastava
通讯作者:
V. K. Smvastava
影响因子:
6.1
作者:
G. Kuersteiner;R. Okui
通讯作者:
G. Kuersteiner;R. Okui
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
P. Phillips
通讯作者:
P. Phillips