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arXiv 1005.5201stat.CO
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关于无似然采样器目标分布模糊性的一个注记

A note on target distribution ambiguity of likelihood-free samplers

S. A. Sisson, G. W. Peters, M. Briers, Y. Fan

摘要:

在计算上难以处理的似然函数的存在下,贝叶斯模拟方法越来越受到人们的关注。术语似然自由采样器,标准模拟算法,如马尔可夫链蒙特卡罗已适用于此设置。在这篇文章中,通过对现有算法的概括,我们证明了无似然采样器可以在目标分布的形式上是模糊的。我们还考虑了这些采样器的理论依据。区分目标分布的形式可能会对未来发展的似然自由采样器的影响。

英文摘要:

Methods for Bayesian simulation in the presence of computationally intractable likelihood functions are of growing interest. Termed likelihood-free samplers, standard simulation algorithms such as Markov chain Monte Carlo have been adapted for this setting. In this article, by presenting generalisations of existing algorithms, we demonstrate that likelihood-free samplers can be ambiguous over the form of the target distribution. We also consider the theoretical justification of these samplers. Distinguishing between the forms of the target distribution may have implications for the future development of likelihood-free samplers.

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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