September 24, 2019 10:25

Abstract

Speaker: Koichi Tojo

Title: Invariant exponential families on homogeneous spaces
Abstract: Exponential families form a good class of families of
distributions.
Although, by definition, there are too many exponential families,
only a small part of them such as normal distributions and
gamma distributions are widely used. To understand these “good”
families systematically, a method to construct exponential families
on homogeneous spaces by representation theory was introduced in [TY18].
Families on a homogeneous space $G/H$ obtained by this method are
invariant under the action of the transformation group $G$.
Then the following natural question arises.
Question: Can $G$-invariant exponential families on $G/H$ be obtained by
this method?
In this talk, we give a quick review of this method and an affirmative
answer to the question above under a reasonable assumption.

[TY18] K. Tojo, T. Yoshino, A method to construct exponential families
by representation theory, arXiv:1811.01394


If you are interested in, please feel free to join.

More Information

Date October 2, 2019 (Wed) 13:30 - 15:00
URL https://c5dc59ed978213830355fc8978.doorkeeper.jp/events/98058

Venue

〒223-8522 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa