arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.1729math.STstat.TH
收藏

马尔可夫链Monte Carlo中的批均值和谱方差估计

Batch means and spectral variance estimators in Markov chain Monte Carlo

James M. Flegal, Galin L. Jones

摘要:

计算蒙特卡罗标准误差(MCSE)是对从马尔可夫链蒙特卡罗实验获得的模拟输出进行统计分析的重要步骤。MCSE通常基于渐近正态分布的方差估计。我们认为谱和批平均值的方法来估计这个方差。特别是,我们建立的条件,保证这些估计是强一致的模拟工作的增加。此外,对于批平均值和重叠批平均值方法,我们建立了确保均方意义上的一致性的条件,这反过来又使我们能够计算最佳批量大小,直到比例的比例常数。最后,我们研究了谱方差和批量均值估计的经验有限样本性质,并为从业者提供了建议。

英文摘要:

Calculating a Monte Carlo standard error (MCSE) is an important step in the statistical analysis of the simulation output obtained from a Markov chain Monte Carlo experiment. An MCSE is usually based on an estimate of the variance of the asymptotic normal distribution. We consider spectral and batch means methods for estimating this variance. In particular, we establish conditions which guarantee that these estimators are strongly consistent as the simulation effort increases. In addition, for the batch means and overlapping batch means methods we establish conditions ensuring consistency in the mean-square sense which in turn allows us to calculate the optimal batch size up to a constant of proportionality. Finally, we examine the empirical finite-sample properties of spectral variance and batch means estimators and provide recommendations for practitioners.

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。

↑