2 papers
stat.ME2026
Aitchison Geometry on the Simplex for Uncertainty Quantification in Bayesian Hyperspectral Image Unmixing
Hector Blondel, Lucas Drumetz, Thierry Chonavel
Most algorithms for hyperspectral image unmixing produce point estimates of fractional abundances of the materials to be separated. However, in the absence of reliable ground truth…
math.OC2025
A Second-Order Majorant Algorithm for Nonnegative Matrix Factorization
Mai-Quyen Pham, Jérémy Cohen, Thierry Chonavel
Nonnegative Matrix Factorization (NMF) is a fundamental tool in unsupervised learning, widely used for tasks such as dimensionality reduction, feature extraction, representation le…