On marginals and profiled posteriors for cosmological parameter estimation

• Published in: arXiv.org
• Main Authors: Kerscher, Martin, Weller, Jochen
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 04.11.2024
• Subjects: 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...