Results 211 to 220 of about 2,535,217 (348)

Correction: Nonnegative matrix factorization for analyzing state dependent neuronal network dynamics in calcium recordings. [PDF]

Sci Rep
Carbonero D, Noueihed J, Kramer MA, White JA.   +3 more
europepmc   +1 more source

On the additive image of zeroth persistent homology

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract For a category X$X$ and a finite field F$F$, we study the additive image of the functor H0(−;F)∗:rep(X,Top)→rep(X,VectF)$\operatorname{H}_0(-;F)_* \colon \operatorname{rep}(X, \mathbf {Top}) \rightarrow \operatorname{rep}(X, \mathbf {Vect}_F)$, or equivalently, of the free functor rep(X,Set)→rep(X,VectF)$\operatorname{rep}(X, \mathbf {Set ...
Ulrich Bauer, Magnus B. Botnan, Steffen Oppermann, Johan Steen   +3 more
wiley   +1 more source

Nonnegative matrix factorization incorporating domain specific constraints for four dimensional scanning transmission electron microscopy. [PDF]

Sci Rep
Kimoto K, Uesugi F, Harano K, Kikkawa J, Cretu O, Shibazaki Y, Shiga M, Togo A.   +7 more
europepmc   +1 more source

The Huang–Yang Formula for the Low‐Density Fermi Gas: Upper Bound

Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1919-1972, August 2026.
ABSTRACT We study the ground state energy of a gas of spin 1/2$1/2$ fermions with repulsive short‐range interactions. We derive an upper bound that agrees, at low density ϱ$\varrho$, with the Huang–Yang conjecture. The latter captures the first three terms in an asymptotic low‐density expansion, and in particular the Huang–Yang correction term of order
Emanuela L. Giacomelli, Christian Hainzl, Phan Thành Nam, Robert Seiringer   +3 more
wiley   +1 more source

An optimal pairwise merge algorithm improves the quality and consistency of nonnegative matrix factorization. [PDF]

IEEE Trans Signal Process
Guo Y, Holy TE.
europepmc   +1 more source

Assessment of nonnegative matrix factorization algorithms for electroencephalography spectral analysis. [PDF]

Biomed Eng Online, 2020
Hu G, Zhou T, Luo S, Mahini R, Xu J, Chang Y, Cong F.   +6 more
europepmc   +1 more source

Task‐Evoked Functional Activation and Coupling With CSF Flow Detected in the Human Brain With Ultrashort Echo Time fMRI at 7 T

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Ultrashort and zero echo time (UTE and ZTE) MRI techniques generate functional contrast through inflow effects, making them suitable for studying cerebral blood flow and cerebrospinal fluid (CSF) dynamics. In a 7‐T study of 13 participants performing a visual task, we demonstrate that UTE produced robust, reproducible activations with group‐level ...
Sara Ponticorvo, Ekaterina Paasonen, Pavel Filip, Douglas L. Rothman, Juha S. Valjakka, Olli Gröhn, Shalom Michaeli, Silvia Mangia   +7 more
wiley   +1 more source

Spatially Informed Nonnegative Matrix Trifactorization for Coclustering Mass Spectrometry Data. [PDF]

Biom J
Sottosanti A, Denti F, Galimberti S, Risso D, Capitoli G.   +4 more
europepmc   +1 more source

Projected Gradient Methods for Nonnegative Matrix Factorization

Neural Computation, 2007
Chih-Jen Lin
semanticscholar   +1 more source

Safe Stabilization Using Non‐Smooth Control Lyapunov Barrier Function

International Journal of Robust and Nonlinear Control, Volume 36, Issue 11, Page 5823-5835, 25 July 2026.
ABSTRACT This paper addresses the challenge of safe stabilization, ensuring the system state reaches the origin while avoiding unsafe state regions. Existing approaches that rely on smooth Lyapunov barrier functions often fail to guarantee a feasible controller. To overcome this limitation, we introduce the non‐smooth control Lyapunov barrier function (
Jianglin Lan, Eldert van Henten, Peter Groot Koerkamp, Congcong Sun   +3 more
wiley   +1 more source