Behavior of Fr\'echet mean and Central Limit Theorems on spheres
Statistics Theory
2020-04-28 v2 Statistics Theory
Abstract
We compute higher derivatives of the Fr\'{e}chet function on spheres with an absolutely continuous and rotationally symmetric probability distribution. Consequences include (i)~a practical condition to test if the mode of the symmetric distribution is a local Fr\'{e}chet mean; (ii)~a Central Limit Theorem on spheres with practical assumptions and an explicit limiting distribution; and (iii)~an answer to the question of whether the smeary effect can occur on spheres with absolutely continuous and rotationally symmetric distributions: with the method presented here, it can in dimension at least~.
Keywords
Cite
@article{arxiv.1911.01985,
title = {Behavior of Fr\'echet mean and Central Limit Theorems on spheres},
author = {Do Tran},
journal= {arXiv preprint arXiv:1911.01985},
year = {2020}
}