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arXiv 1012.2983stat.CO
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贝叶斯估计的零方差马尔可夫链蒙特卡罗

Zero Variance Markov Chain Monte Carlo for Bayesian Estimators

Antonietta Mira, Reza Solgi, Daniele Imparato

摘要:

兴趣在于通过马尔可夫链蒙特卡罗(MCMC)模拟来评估函数关于可能未归一化的概率分布的期望值。基于物理学文献中引入的零方差原理,提出了MCMC估计的通用方差缩减技术。零方差估计量的渐近无偏的条件。在正则条件下证明了一个中心极限定理。的潜在的想法是说明与实际应用的概率,logit和Gesthet-Bayesian模型。对于所有这些模型,证明了零方差估计量的中心极限定理和无偏性(见在线提供的补充材料)。

英文摘要:

Interest is in evaluating, by Markov chain Monte Carlo (MCMC) simulation, the expected value of a function with respect to a, possibly unnormalized, probability distribution. A general purpose variance reduction technique for the MCMC estimator, based on the zero-variance principle introduced in the physics literature, is proposed. Conditions for asymptotic unbiasedness of the zero-variance estimator are derived. A central limit theorem is also proved under regularity conditions. The potential of the idea is illustrated with real applications to probit, logit and GARCH Bayesian models. For all these models, a central limit theorem and unbiasedness for the zero-variance estimator are proved (see the supplementary material available on-line).

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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