Results 201 to 210 of about 137,800 (236)
Binary Sparse Nonnegative Matrix Factorization [PDF]
, 2009 Yuan Yuan +4 more
openalex +1 more source
Toward a Solution of Archdeacon's Conjecture on Integer Heffter Arrays
Journal of Combinatorial Designs, Volume 33, Issue 8, Page 310-323, August 2025.ABSTRACT In this article, we make significant progress on a conjecture proposed by Dan Archdeacon on the existence of integer Heffter arrays H ( m , n ; s , k ) whenever the necessary conditions hold, that is, 3 ⩽ s ⩽ n, 3 ⩽ k ⩽ m, m s = n k and n k ≡ 0 , 3 ( mod 4 ).
Marco Antonio Pellegrini +1 more
wiley +1 more source
Nonnegative matrix factorization and I-divergence alternating minimization
, 2006 Lorenzo Finesso, Peter Spreij
openalex +1 more source
Document classification using nonnegative matrix factorization and underapproximation [PDF]
, 2009 Michael W. Berry +2 more
openalex +1 more source
Note on Hamiltonicity of Basis Graphs of Even Delta‐Matroids
Journal of Graph Theory, Volume 109, Issue 4, Page 446-453, August 2025.ABSTRACT We show that the basis graph of an even delta‐matroid is Hamiltonian if it has more than two vertices. More strongly, we prove that for two distinct edges e and f sharing a common end, it has a Hamiltonian cycle using e and avoiding f unless it has at most two vertices or it is a cycle of length at most four.
Donggyu Kim, Sang‐il Oum
wiley +1 more source
Numerical Linear Algebra with Applications, Volume 32, Issue 4, August 2025.ABSTRACT We propose an algorithm to solve optimization problems constrained by ordinary or partial differential equations under uncertainty, with additional almost sure inequality constraints on the state variable. To alleviate the computational burden of high‐dimensional random variables, we approximate all random fields by the tensor‐train (TT ...
Harbir Antil +2 more
wiley +1 more source
Regimes and Mechanisms of Inflammation Described by a Reaction–Diffusion System
Mathematical Methods in the Applied Sciences, Volume 48, Issue 11, Page 11360-11379, 30 July 2025.ABSTRACT Inflammation is a biological response of the immune system to external stimuli such as injury or infection. It plays an important role in various diseases including atherosclerosis, cancer, and neurodegenerative diseases. This work presents a generic inflammation model based on reaction–diffusion equations that describes the concentrations of ...
W. El Hajj, N. El Khatib, V. Volpert
wiley +1 more source
Mathematical Methods in the Applied Sciences, Volume 48, Issue 10, Page 10550-10570, 15 July 2025.ABSTRACT Bacteriophages, or phages (viruses of bacteria), play significant roles in shaping the diversity of bacterial communities within the human gut. A phage‐infected bacterial cell can either immediately undergo lysis (virulent/lytic infection) or enter a stable state within the host as a prophage (lysogeny) until a trigger event, called prophage ...
Hyacinthe M. Ndongmo Teytsa +3 more
wiley +1 more source
Distributed nonnegative matrix factorization for web-scale dyadic data analysis on mapreduce [PDF]
, 2010 Chao Liu +4 more
openalex +1 more source