A. Okuno

activity

20182026

r

-II sibling stars in the Milky Way with the Greedy Optimistic Clustering algorithm

13 citations · 33 across the 25 of their papers we have counts for

collaborators

Showing 2022Show all

2 papers · 1 filter

astro-ph.GA2022★ 13 cited

Finding $r$ -II sibling stars in the Milky Way with the Greedy Optimistic Clustering algorithm

Kohei Hattori, Akifumi Okuno, Ian U. Roederer

$R$ -process enhanced stars with [Eu/Fe] $\geq + 0.7$ (so-called $r$ -II stars) are believed to have formed in an extremely neutron-rich environment in which a rare astrophysical event…

stat.ME2022

A Greedy and Optimistic Approach to Clustering with a Specified Uncertainty of Covariates

Akifumi Okuno, Kohei Hattori

In this study, we examine a clustering problem in which the covariates of each individual element in a dataset are associated with an uncertainty specific to that element. More spe…

Finding r-II sibling stars in the Milky Way with the Greedy Optimistic Clustering algorithm

A Greedy and Optimistic Approach to Clustering with a Specified Uncertainty of Covariates

Finding $r$ -II sibling stars in the Milky Way with the Greedy Optimistic Clustering algorithm