关于宇宙学参数估计的边际和剖面后验

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2024-11-21 DOI:10.1088/1475-7516/2024/11/035

Martin Kerscher and Jochen Weller

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引用次数: 0

摘要

通过几个例子和对Pantheon+超新星样本的分析，我们讨论了边际后验分布与剖面后验分布--贝叶斯伪装下的剖面似然--的特性。我们研究了是最大化（用于剖析）更合适，还是整合（用于边际化）更合适。为了报告结果，我们推荐使用边际后验分布。

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On marginals and profiled posteriors for cosmological parameter estimation

With several examples and in an analysis of the Pantheon+ supernova sample we discuss the properties of the marginal posterior distribution versus the profiled posterior distribution — the profile likelihood in a Bayesian disguise. We investigate whether maximisation, as used for the profiling, or integration, as used for the marginalisation, is more appropriate. To report results we recommend the marginal posterior distribution.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.