arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.14445stat.MEmath.STstat.TH
收藏

加权似然Bootstrap中先验信息的引入及其在误设定模型中的应用

Introducing prior information in Weighted Likelihood Bootstrap with applications to model misspecification

Emilia Pompe

摘要:

我们提出后验Bootstrap,一组算法扩展加权Likestive Bootstrap,适当地将先验信息和解决问题的模型误指定贝叶斯推断。我们考虑两种方法来结合先验知识:第一种是基于惩罚的加权Likestival Bootstrap目标函数,第二种是使用伪样本的先验预测分布。我们还提出了分层模型的方法,这是以前不知道的方法的基础上加权Likestival Bootstrap。Edgeworth展开指导我们的方法的发展,并使我们能够提供更深入的了解加权Likestrant Bootstrap的属性比以前已知的。我们的实验证实了理论结果,并显示在错误指定的设置对贝叶斯推断的模型误指定的影响减少。

英文摘要:

We propose Posterior Bootstrap, a set of algorithms extending Weighted Likelihood Bootstrap, to properly incorporate prior information and address the problem of model misspecification in Bayesian inference. We consider two approaches to incorporating prior knowledge: the first is based on penalization of the Weighted Likelihood Bootstrap objective function, and the second uses pseudo-samples from the prior predictive distribution. We also propose methodology for hierarchical models, which was not previously known for methods based on Weighted Likelihood Bootstrap. Edgeworth expansions guide the development of our methodology and allow us to provide greater insight on properties of Weighted Likelihood Bootstrap than were previously known. Our experiments confirm the theoretical results and show a reduction in the impact of model misspecification against Bayesian inference in the misspecified setting.

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。

↑