使用贝叶斯模型的最佳仪器选择 模型的平均值 隐含的仪器变量 两阶段最小平方估计器
Teague Henry1, Zachary Fisher2, Kenneth Bollen3
1Psychology & Data Science, University of Virginia.
一种新方法,即模型隐式仪表变量双阶段贝叶斯式模型平均值 (MIIV-2SBMA),改进了现有的潜在变量模型技术. 它提供了更强大的能力来检测有问题的和弱的工具,帮助统计分析.
科学领域:
- 计量经济学 计量经济学
- 统计建模 统计建模
- 隐性变量分析 隐性变量分析
背景情况:
- 模型隐含的仪表变量二阶段最小平方 (MIIV-2SLS) 是潜在变量模型的估计器.
- 现有的方程特定的错误规范测试在识别有问题的仪器方面缺乏具体性.
- 软弱的仪器,目标变量的不良预测器,在统计估计中构成了重大挑战.
研究的目的:
- 引入一种新的扩展,用于检测特定仪器的错误规格和弱仪器.
- 开发模型隐含的仪器变量二阶段贝叶斯式模型平均值 (MIIV-2SBMA) 估计器.
- 增强隐性变量模型中仪器质量测试的特异性和功率.
主要方法:
- 模型隐含的仪器变量二阶段贝叶斯式模型平均化 (MIIV-2SBMA) 估计器的开发.
- 一项模拟研究将MIIV-2SBMA性能与MIIV-2SLS.相比较.
- 在MIIV-2SBMA框架内引入特定仪器的过度识别测试.
主要成果:
- 在参数估计方面,MIIV-2SBMA表现与MIIV-2SLS相当.
- 新型仪器特定的过度识别测试显示了在检测有问题的和弱的仪器方面更强大的能力.
- 使用真实数据对MIIV-2SBMA估计器的实证验证.
结论:
- 通过改进仪器诊断,MIIV-2SBMA为潜变量建模提供了宝贵的进步.
- 开发的测试可以更准确地识别仪器变量带来的特定问题.
- 这种方法提高了依赖工具变量的统计模型的可靠性和可解释性.
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