A nonnegative least squares solver for multiple right-hand sides for approximating the nonnegative matrix factorization

• Main Author: Κολώνιας, Λεωνίδας
• Other Authors: Kolonias, Leonidas
• Language: English
• Published: 2022
• Subjects: Nonneggative Least Squares (NNLS); Nonnegative Matrix Factorization (NMF); Multiple right-hand sides; Block Krylov subspaces; Numerical linear algebra; Μη αρνητικά ελάχιστα τετράγωνα; Μη αρνητική παραγοντοποίηση μητρώων; Πολλά δεξιά μέλη; Μπλοκ υπόχωροι Krylov

Nonnegative Least Squares (NNLS) problems, where the variables are restricted to take only nonnegative values, often arise in many applications and are also at the core of most approaches to solve the nonnegative matrix factorization (NMF), a low-rank matrix approximation problem with nonnegativity...