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arXiv 2301.09704math.STstat.TH
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用经验似然法提高结构方程模型的估计效率

Improving Estimation Efficiency In Structural Equation Models By An Easy Empirical Likelihood Approach

Shan Wang, Hanxiang Peng

摘要:

在这篇文章中,我们构造了经验似然(EL)加权估计的线性泛函的概率测度的存在边信息。出于可能无限维的半参数模型中的冗余参数的动机,我们考虑使用估计的约束函数,并允许约束的数量随着样本量的增加而增加。我们研究的渐近性质和效率增益。所得结果用于构造结构方程模型参数的改进估计。参数的EL加权估计被证明具有减少的方差在SEM中的边信息的随机独立的随机误差和随机协变量的存在。给出了效率增益的一些模拟结果。

英文摘要:

In this article, we construct empirical likelihood (EL)-weighted estimators of linear functionals of a probability measure in the presence of side information. Motivated by nuisance parameters in semiparametric models with possibly infinite dimensions, we consider the use of estimated constraint functions and allow the number of constraints to grow with the sample size. We study the asymptotic properties and efficiency gains. The results are used to construct improved estimators of parameters in structural equation models. The EL-weighted estimators of parameters are shown to have reduced variances in a SEM in the presence of side information of stochastic independence of the random error and random covariate. Some simulation results on efficiency gain are reported.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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