Results 91 to 100 of about 2,052,954 (190)
Continuous Semi-Supervised Nonnegative Matrix Factorization
, 2022 Nonnegative matrix factorization can be used to automatically detect topics within a corpus in an unsupervised fashion. The technique amounts to an approximation of a nonnegative matrix as the product of two nonnegative matrices of lower rank.
Lindstrom, Michael R. +4 more
core
Long‐time asymptotics of a full soliton gas for the Camassa–Holm equation
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract We investigate the long‐time asymptotics of a full soliton gas for the Camassa–Holm equation. The analysis starts from a pure‐soliton Riemann–Hilbert (RH) problem with 2N$2N$ poles and two distinct types of residue conditions. We prove that, as N→∞$N\rightarrow \infty$, this discrete RH problem converges to a limiting soliton gas RH problem ...
Dedi Yan, Xianguo Geng, Minxin Jia
wiley +1 more source
Nonparametric Bayesian Nonnegative Matrix Factorization
, 2020 © Springer Nature Switzerland AG 2020. Nonnegative Matrix Factorization (NMF) is an important tool in machine learning for blind source separation and latent factor extraction.
Mengersen, K +9 more
core +1 more source
SNMFSMMA: using symmetric nonnegative matrix factorization and Kronecker regularized least squares to predict potential small molecule-microRNA association. [PDF]
RNA Biol, 2020 Zhao Y, Chen X, Yin J, Qu J.
europepmc +1 more source
Proper affine deformations of positive representations
Journal of Topology, Volume 19, Issue 4, December 2026.Abstract We define, for every positive Anosov representation of a nonabelian free group into SO(2n,2n−1)$\mathrm{SO}(2n,2n-1)$, a family of R4n−1$\mathbb {R}^{4n-1}$‐valued cocycles which induce proper affine actions on R4n−1$\mathbb {R}^{4n-1}$. We construct fundamental domains in R4n−1$\mathbb {R}^{4n-1}$ bounded by generalized crooked planes for ...
Jean‐Philippe Burelle +1 more
wiley +1 more source
Control Design Based on Generalized Lur'e Lyapunov Functions for Sampled‐Data Lur'e Systems
International Journal of Robust and Nonlinear Control, Volume 36, Issue 16, Page 7450-7463, 10 November 2026.ABSTRACT This article addresses the synthesis of stabilizing control laws for aperiodic sampled‐data Lur'e systems. Based on a hybrid system representation of the closed‐loop system and a timer‐dependent generalized Lur'e–Postnikov type Lyapunov function, stabilization conditions are obtained by separating decision variables with the application of two
Arthur Scolari Fagundes +2 more
wiley +1 more source
Journal of Chemometrics, Volume 40, Issue 11, November 2026.ABSTRACT Gridded climate reanalysis datasets can be viewed as image cubes, yet chemometric decomposition methods remain underutilized in climate data analysis. This study applied pixel‐based Multivariate Curve Resolution–Alternating Least Squares (MCR‐ALS) with a trilinearity constraint to ERA5 precipitation data over the Iberian Peninsula (1940–2024).
Stefan Platikanov +2 more
wiley +1 more source
The Impact of BOLD‐Induced Linewidth Modulation on Functional 1H MRS Analysis
NMR in Biomedicine, Volume 39, Issue 11, November 2026.Functional MRS studies face a technical challenge: BOLD‐related lineshape changes can be mistaken for genuine metabolic changes, causing ~1% glutamate estimation bias at 3 and 7 T across conventional (LCModel, ABfit‐reg) and 2D fitting methods. Using synthetic data, this study shows that explicit BOLD linewidth correction—via dynamic lineshape ...
Martin Wilson +2 more
wiley +1 more source
Transactions in GIS, Volume 30, Issue 7, November 2026.ABSTRACT Hospital visitation reflects a complex destination‐choice process shaped by travel cost, perceived hospital attractiveness, and neighborhood socioeconomic conditions. However, less is known about how these factors jointly structure realized hospital destination choice and how their relationships vary across travel distances and community ...
Binbin Lin +5 more
wiley +1 more source
Selector form of Weaver's conjecture and frame sparsification
Proceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.Abstract We show an extension of a probabilistic result of Marcus, Spielman, and Srivastava, which resolved the Kadison–Singer problem, to block diagonal positive semidefinite random matrices. We use this result to show several selector results, which generalize their partition counterparts.
Marcin Bownik
wiley +1 more source