arXiv Machine Learning

Separable Nonnegative Matrix Factorization Using Powered Ratio-of-Norms Regularization

arXiv Machine Learning
Jun 9

On solving symmetric multi-type orthogonal non-negative matrix tri-factorization problem

arXiv:2606. 08291v1 Announce Type: new Abstract: We study the symmetric multi-type orthogonal non-negative matrix tri-factorization problem, where several symmetric non-negative matrices are simultaneously approximated by factors of the form $GS_{i}G^{\top}$, with a shared non-negative and orthogonal factor $G$.

By Rok Hribar, Gregor Papa, Janez Povh, Andrej Kastrin
arXiv Machine Learning
5d ago

Controlled Block Proximal Linearized Method for Nonconvex and Nonsmooth Optimization

The paper introduces the Controlled Block Proximal Linearized (CBPL) method for multiblock nonconvex and nonsmooth optimization, avoiding assumptions of bounded iterates or objective coercivity. CBPL adds a control potential to block updates while preserving the original objective, variables, and constraints, and under explicit control design conditions and the KL property it guarantees boundedness, finite length, whole‑sequence convergence of variables, and convergence of objective values. The method is applied to graph‑regularized nonnegative matrix factorization, CP decomposition, and independent‑core matrix tri‑factorization with β0 sparsity constraints, demonstrating reconstruction‑preserving scale degeneracies, explicit controls yielding compact sublevel sets, and whole‑sequence convergence to full critical points, with experiments confirming convergence and sustained graph action.

By Weifeng Yang
arXiv Machine Learning
Jul 23

Non--negative matrix factorization using the \textit{R} package \textsf{nnmf}

arXiv:2607. 20084v1 Announce Type: cross Abstract: Non--negative matrix factorization (NMF) has become an established dimensionality reduction technique for extracting latent structures from non--negative data and has found widespread applications in fields such as bioinformatics, text mining, image analysis, and recommender systems.

By Volkan Sevin\c{c}, Nikolas Kontemeniotis, Theodoros Perdikis, Michail Tsagris
Hugging Face Trending Papers
Jun 2

Graph Regularized Non-negative Reduced Biquaternion Matrix Factorization for Color Image Recognition

Non-negative reduced biquaternion matrix factorization (NRBMF) uses the product of reduced biquaternion (RB) matrices to incorporate the non-negativity constraints of color image pixels into the factorization process. However, NRBMF mainly focuses on reconstruction accuracy and does not exploit the local geometric structure of image data, which may limit the discriminative ability of the learned low-dimensional features.