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arXiv 2602.01770stat.CO
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具有预过滤的多保真度近似贝叶斯计算

A multifidelity approximate Bayesian computation with pre-filtering

School of Statistics and Data Science, Nankai University(南开大学统计与数据科学学院);Institute of Mathematical Sciences, ShanghaiTech University(上海科技大学数学科学研究所)

Xuefei Cao, Shijia Wang, Yongdao Zhou

AI总结:

本文提出了一种基于多保真度模拟模型的近似贝叶斯计算方法,通过预过滤分层重要性采样算法提高计算效率,并提供评估多保真度模型适用性的实用策略。

摘要:

近似贝叶斯计算(ABC)方法通常需要大量的模拟,导致计算成本高。本文聚焦于多保真度模拟模型,并提出一种预过滤分层重要性采样算法。在温和的假设下,我们理论证明所提算法满足后验集中性性质,刻画了误差上界以及算法效率与预过滤标准之间的关系。此外,我们提供了一种实用策略来评估多保真度模型对所提方法的适用性。最后,我们开发了具有自适应预过滤策略的多保真度ABC顺序蒙特卡罗方法。数值实验用于证明所提方法的有效性。我们开发了一个R包,可在https://github.com/caofff/MAPS上获取。

英文摘要:

Approximate Bayesian Computation (ABC) methods often require extensive simulations, resulting in high computational costs. This paper focuses on multifidelity simulation models and proposes a pre-filtering hierarchical importance sampling algorithm. Under mild assumptions, we theoretically prove that the proposed algorithm satisfies posterior concentration properties, characterize the error upper bound and the relationship between algorithmic efficiency and pre-filtering criteria. Additionally, we provide a practical strategy to assess the suitability of multifidelity models for the proposed method. Finally, we develop a multifidelity ABC sequential Monte Carlo with adaptive pre-filtering strategy. Numerical experiments are used to demonstrate the effectiveness of the proposed approach. We develop an R package that is available at https://github.com/caofff/MAPS

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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