3 papers
stat.ML2022
Semi-Parametric Contextual Bandits with Graph-Laplacian Regularization
Young-Geun Choi, Gi-Soo Kim, Seunghoon Paik +1
Non-stationarity is ubiquitous in human behavior and addressing it in the contextual bandits is challenging. Several works have addressed the problem by investigating semi-parametr…
stat.CO2021
An efficient parallel block coordinate descent algorithm for large-scale precision matrix estimation using graphics processing units
Young-Geun Choi, Seunghwan Lee, Donghyeon Yu
Large-scale sparse precision matrix estimation has attracted wide interest from the statistics community. The convex partial correlation selection method (CONCORD) developed by Kha…
stat.ME2018
Simultaneous disease mapping and hot spot detection with application to childhood obesity surveillance from electronic health records
Young-Geun Choi, Lawrence P. Hanrahan, Derek Norton +1
Electronic health records (EHRs) have become a platform for data-driven surveillance on a granular level in recent years. In this paper, we make use of EHRs for early prevention of…