Further restricted versions of the nonnegative matrix factorization problem

IF 1 3区数学 Q1 MATHEMATICS

Linear Algebra and its Applications Pub Date : 2025-02-03 DOI:10.1016/j.laa.2025.01.040

Yaroslav Shitov

引用次数: 0

Abstract

We discuss the functions of SNT-rank and restricted SNT-rank, introduced in a recent article of Kokol Bukovšek and Šmigoc. We answer several questions from their work and give an example of a symmetric nonnegative matrix for which the restricted SNT-rank is not defined. Moreover, we show that the restricted SNT-rank of a matrix can exceed its SNT-rank even if both of them are defined. We use earlier results to give bounds on SNT-ranks of rank-three matrices and Euclidean distance matrices, and we determine the complexity of the algorithmic computation of SNT-ranks.

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来源期刊

Linear Algebra and its Applications 数学-应用数学

CiteScore

2.20

自引率

9.10%

发文量

333

审稿时长

13.8 months

期刊介绍： Linear Algebra and its Applications publishes articles that contribute new information or new insights to matrix theory and finite dimensional linear algebra in their algebraic, arithmetic, combinatorial, geometric, or numerical aspects. It also publishes articles that give significant applications of matrix theory or linear algebra to other branches of mathematics and to other sciences. Articles that provide new information or perspectives on the historical development of matrix theory and linear algebra are also welcome. Expository articles which can serve as an introduction to a subject for workers in related areas and which bring one to the frontiers of research are encouraged. Reviews of books are published occasionally as are conference reports that provide an historical record of major meetings on matrix theory and linear algebra.