activity
20092023
most citedCovariance approximation for large multivariate spatial data sets with an application to multiple climate model errors

70 citations · 103 across the 11 of their papers we have counts for

collaborators

11 papers

stat.ML2023

Variational sparse inverse Cholesky approximation for latent Gaussian processes via double Kullback-Leibler minimization

Jian Cao, Myeongjong Kang, Felix Jimenez +3

To achieve scalable and accurate inference for latent Gaussian processes, we propose a variational approximation based on a family of Gaussian distributions whose covariance matric…

stat.ME2022

Rapidly Mixing Multiple-try Metropolis Algorithms for Model Selection Problems

Hyunwoong Chang, Changwoo J. Lee, Zhao Tang Luo +2

The multiple-try Metropolis (MTM) algorithm is an extension of the Metropolis-Hastings (MH) algorithm by selecting the proposed state among multiple trials according to some weight…

stat.ML2022★ 2 cited

Why the Rich Get Richer? On the Balancedness of Random Partition Models

Changwoo J. Lee, Huiyan Sang

Random partition models are widely used in Bayesian methods for various clustering tasks, such as mixture models, topic models, and community detection problems. While the number o…

stat.ML2021★ 2 cited

Row-clustering of a Point Process-valued Matrix

Lihao Yin, Ganggang Xu, Huiyan Sang +1

Structured point process data harvested from various platforms poses new challenges to the machine learning community. By imposing a matrix structure to repeatedly observed marked…

stat.ME2021★ 4 cited

T-LoHo: A Bayesian Regularization Model for Structured Sparsity and Smoothness on Graphs

Changwoo J. Lee, Zhao Tang Luo, Huiyan Sang

Graphs have been commonly used to represent complex data structures. In models dealing with graph-structured data, multivariate parameters may not only exhibit sparse patterns but…

stat.AP2021

Risk Based Arsenic Rational Sampling Design for Public and Environmental Health Management

Lihao Yin, Huiyan Sang, Douglas J. Schnoebelen +6

Groundwater contaminated with arsenic has been recognized as a global threat, which negatively impacts human health. Populations that rely on private wells for their drinking water…