Results 131 to 140 of about 137,800 (236)

Nonnegative factorization and the maximum edge biclique problem [PDF]

Nonnegative matrix factorization (NMF) is a data analysis technique based on the approximation of a nonnegative matrix with a product of two nonnegative factors, which allows compression and interpretation of nonnegative data. In this paper, we study the
GILLIS, Nicolas, GLINEUR, François
core  

Erratum: “The generalized inverse of a nonnegative matrix” [PDF]

, 1973
Robert J. Plemmons, Randall E. Cline
openalex   +1 more source

Relation of Bulk‐to‐Shear Loss Factors in Viscoelastic Auxetic Metamaterials

physica status solidi (b), EarlyView.
This article examines the dynamic behavior of isotropic auxetic viscoelastic materials, highlighting how negative Poisson's ratios affect energy dissipation, damping, and the interplay between bulk and shear moduli. By extending established viscoelastic theories to the auxetic range, it defines bound limits and underscores how dynamic Poisson's ratio ...
Simon Preston, Julián Londoño‐Monsalve, Ken E. Evans   +2 more
wiley   +1 more source

Approximate Nonnegative Matrix Factorization via Alternating Minimization

, 2004
In this paper we consider the Nonnegative Matrix Factorization (NMF) problem: given an (elementwise) nonnegative matrix $V \in \R_+^{m\times n}$ find, for assigned $k$, nonnegative matrices $W\in\R_+^{m\times k}$ and $H\in\R_+^{k\times n}$ such that $V ...
Finesso, Lorenzo, Spreij, Peter
core   +1 more source

Bounds for the Perron root of a nonnegative irreducible partitioned matrix [PDF]

, 1981
Emeric Deutsch
openalex   +1 more source

Robust Bounds on the Eigenvalues of Linear Systems With Delays and Their Applications in Stability Analysis

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT We review some known bounds on the eigenvalues of a matrix and use similar techniques to derive bounds for the class of nonlinear eigenproblems and, as a special case, the eigenvalues for LTI systems with delays. We present two classes of results.
Erik I. Verriest
wiley   +1 more source

Generalized Perron complements in diagonally dominant matrices

AIMS Mathematics
The concept of the generalized Perron complement concerning a nonnegative irreducible matrix was proposed by L. Z. Lu in 2002, and it was used to construct an algorithm for estimating the boundary of the spectral radius.
Qin Zhong, Na Li
doaj   +1 more source

Functional and Structural Analyses of Diverse G‐Quadruplex and Non‐G‐Quadruplex Structures Formed by Guanine‐Rich Nucleic Acids: A Study on the Insulin Aptamer

Small, EarlyView.
IGA3, a guanine‐rich insulin aptamer, adopts different structures depending on environmental conditions. Under low cation concentrations, IGA3 forms a non‐G‐quadruplex structure that interacts with insulin. This finding highlights that guanine‐rich nucleic acids, in structures other than G‐quadruplex, can also bind to proteins, revealing valuable ...
Naoya Iwano, Taiji Oyama, Mizuki Tomizawa, Shintaro Inaba, Ryuma Mori, Yasumoto Nakazawa, Koji Sode, Kaori Tsukakoshi, Takayuki Nakano, Kazunori Ikebukuro   +9 more
wiley   +1 more source

Singular M-matrices which may not have a nonnegative generalized inverse

Special Matrices, 2014
A matrix A ∈ ℝn×n is a GM-matrix if A = sI − B, where 0 < ρ(B) ≤ s and B ∈WPFn i.e., both B and Bthave ρ(B) as their eigenvalues and their corresponding eigenvector is entry wise nonnegative.
Sushama Agrawal N., Premakumari K., Sivakumar K.C.   +2 more
doaj   +1 more source

Two-step Nonnegative Matrix Factorization Algorithm for the Approximate Realization of Hidden Markov Models

, 2010
We propose a two-step algorithm for the construction of a Hidden Markov Model (HMM) of assigned size, i.e. cardinality of the state space of the underlying Markov chain, whose $n$-dimensional distribution is closest in divergence to a given distribution.
Finesso, L., Grassi, A., Spreij, P.
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