3 papers
stat.ME2026
Dimension reduction of compositional data through mixtures of latent source compositions
Hyeon Lee, J. S. Marron, Eric Grunsky +1
Understanding the distribution of mineral compositions is an important challenge in geology. This motivates new variations on dimension reduction for compositional data, lying on a…
cs.LG2025
Dual Mixture-of-Experts Framework for Discrete-Time Survival Analysis
Hyeonjun Lee, Hyungseob Shin, Gunhee Nam +1
Survival analysis is a task to model the time until an event of interest occurs, widely used in clinical and biomedical research. A key challenge is to model patient heterogeneity…
stat.ME2025
Principal Subsimplex Analysis
Hyeon Lee, Kassel Liam Hingee, Janice L. Scealy +3
Compositional data, which are data that lie in a simplex, naturally arise in many scientific domains such as geochemistry, microbiology, and economics. In such domains, obtaining s…