An Objective Prior from a Scoring Rule
Methodology
2021-07-21 v2
Abstract
In this paper we introduce a novel objective prior distribution levering on the connections between information, divergence and scoring rules. In particular, we do so from the starting point of convex functions representing information in density functions. This provides a natural route to proper local scoring rules using Bregman divergence. Specifically, we determine the prior which solves setting the score function to be a constant. While in itself this provides motivation for an objective prior, the prior also minimizes a corresponding information criterion.
Cite
@article{arxiv.2105.03241,
title = {An Objective Prior from a Scoring Rule},
author = {Stephen G. Walker and Cristiano Villa},
journal= {arXiv preprint arXiv:2105.03241},
year = {2021}
}