arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1609.05067math.STstat.TH
收藏

先验贝叶斯可信集的渐近频率覆盖性质

Asymptotic frequentist coverage properties of Bayesian credible sets for sieve priors

Judith Rousseau, Botond Szabo

摘要:

我们调查的频率覆盖属性的贝叶斯可信集一般的,自适应的,非参数的框架。众所周知,自适应和诚实的信心集的建设是不可能的一般。为了克服这个问题,我们引入一个额外的假设的功能参数,所谓的“一般抛光尾”的条件。然后,我们表明,在标准的假设下,分层和经验贝叶斯方法的结果在诚实的信心集筛类型的先验在一般情况下,我们表征其大小。我们应用派生的抽象结果的各种例子,包括非参数回归模型,密度估计使用指数族的先验,密度估计使用直方图先验和非参数分类模型,我们表明,它们的大小是近极大极小自适应相对于所考虑的特定半度量。

英文摘要:

We investigate the frequentist coverage properties of Bayesian credible sets in a general, adaptive, nonparametric framework. It is well known that the construction of adaptive and honest confidence sets is not possible in general. To overcome this problem we introduce an extra assumption on the functional parameters, the so called "general polished tail" condition. We then show that under standard assumptions both the hierarchical and empirical Bayes methods results in honest confidence sets for sieve type of priors in general settings and we characterize their size. We apply the derived abstract results to various examples, including the nonparametric regression model, density estimation using exponential families of priors, density estimation using histogram priors and nonparametric classification model, for which we show that their size is near minimax adaptive with respect to the considered specific semi-metrics.

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。

↑