Results 81 to 90 of about 7,904 (176)

Descent methods for Nonnegative Matrix Factorization [PDF]

, 2008
In this paper, we present several descent methods that can be applied to nonnegative matrix factorization and we analyze a recently developped fast block coordinate method called Rank-one Residue Iteration (RRI).
Blondel, Vincent D., Ho, Ngoc-Diep, Van Dooren, Paul   +2 more
core   +2 more sources

Posttransplantation clonal dynamics of hematopoietic stem cells carrying prenatal and early‐life DNMT3A mutations

HemaSphere, Volume 9, Issue 12, December 2025.
Abstract Clonal hematopoiesis (CH), a prevalent and premalignant state in the elderly, has been detected in young individuals under selective pressures such as hematopoietic cell transplantation (HCT). However, the origin of CH and mutational processes underlying CH driver mutations in young blood systems remain unclear.
Lucca L. M. Derks, Konradin F. Müskens, Markus J. van Roosmalen, Aniek O. de Graaf, Nina Epskamp, Laurianne Trabut, Rico Hagelaar, Joop H. Jansen, Caroline A. Lindemans, Maaike G. J. M. van Bergen, Ruben van Boxtel, Mirjam E. Belderbos   +11 more
wiley   +1 more source

Similarity Learning-Induced Symmetric Nonnegative Matrix Factorization for Image Clustering

IEEE Access, 2019
As a typical variation of nonnegative matrix factorization (NMF), symmetric NMF (SNMF) is capable of exploiting information of the cluster embedded in the matrix of similarity.
Wei Yan, Bob Zhang, Zuyuan Yang, Shengli Xie   +3 more
doaj   +1 more source

Novel methods for spatial risks analysis and quantitative source apportionment of heavy metals pollution in agricultural soils

Journal of Agriculture and Food Research
Precision pollution control relies on accurate spatial interpolation and quantitative source apportionment. This study addresses key methodological gaps by developing two novel tools: a non-negative constrained biharmonic spline interpolation algorithm ...
Qinqin Yu, Jinying Li, Jiahao Li, Tong Liu, Fangyuan Chen, Yao Liu, Haoming Wang, Shaoyang Tao, Min Zhou, Haobo Hou   +9 more
doaj   +1 more source

Nonnegative Matrix Factorization of time frequency representation of vibration signal for local damage detection – comparison of algorithms

E3S Web of Conferences, 2018
Local damage detection in rotating machine elements is very important problem widely researched in the literature. One of the most common approaches is the vibration signal analysis.
Wodecki Jacek
doaj   +1 more source

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  

A Hybrid Algorithm for Estimating Origin-Destination Flows

IEEE Access, 2018
With the development of intelligent transportation systems, the estimation of traffic flow in urban areas has attracted a great attention of researchers.
Xianghua Li, Jurgen Kurths, Chao Gao, Junwei Zhang, Zhen Wang, Zili Zhang   +5 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.
core  

Note Onset Detection via Nonnegative Factorization of Magnitude Spectrum

EURASIP Journal on Advances in Signal Processing, 2008
A novel approach for onset detection of musical notes from audio signals is presented. In contrast to most commonly used conventional approaches, the proposed method features new detection functions constructed from the linear temporal bases that are ...
Saeid Sanei, Jonathon A. Chambers, Yuhui Luo, Wenwu Wang   +3 more
doaj   +1 more source

Diffuse Optical Imaging Using Decomposition Methods

International Journal of Optics, 2012
Diffuse optical imaging (DOI) for detecting and locating targets in a highly scattering turbid medium is treated as a blind source separation (BSS) problem.
Binlin Wu, M. Alrubaiee, W. Cai, M. Xu, S. K. Gayen   +4 more
doaj   +1 more source