3 papers
math.OC2026
Fréchet Regression on the Bures-Wasserstein Manifold
Duc Toan Nguyen, César A. Uribe
Fréchet regression, or conditional Barycenters, is a flexible framework for modeling relationships between covariates (usually Euclidean) and response variables on general metric s…
math.DG2025
On the existence of a balanced vertex in geodesic nets with three boundary vertices
Duc Toan Nguyen
Geodesic nets are types of graphs in Riemannian manifolds where each edge is a geodesic segment. One important object used in the construction of geodesic nets is a balanced vertex…
stat.ML2023
Towards Tuning-Free Minimum-Volume Nonnegative Matrix Factorization
Duc Toan Nguyen, Eric C. Chi
Nonnegative Matrix Factorization (NMF) is a versatile and powerful tool for discovering latent structures in data matrices, with many variations proposed in the literature. Recentl…