Results 31 to 40 of about 54,863 (259)

Investigating the feature extraction capabilities of non-negative matrix factorisation algorithms for black-and-white images [PDF]

ITM Web of Conferences
Nonnegative matrix factorisation (NMF) is a class of matrix factorisation methods to approximate a nonnegative matrix as a product of two nonnegative matrices.
Liew How Hui, Ng Wei Shean, Chen Huey Voon   +2 more
doaj   +1 more source

Max-Margin Semi-NMF [PDF]

Procedings of the British Machine Vision Conference 2011, 2011
In this paper, we propose a maximum-margin framework for classification using Non-negative Matrix Factorization. In contrast to previous approaches where the classification and matrix factorization are separated, we incorporate the maximum margin constraints within the NMF formuation i.e.
Vijay B.G. Kumar, Ioannis Patras, Irene Kotsia   +2 more
openaire   +1 more source

LS-NMF: A modified non-negative matrix factorization algorithm utilizing uncertainty estimates

BMC Bioinformatics, 2006
Background Non-negative matrix factorisation (NMF), a machine learning algorithm, has been applied to the analysis of microarray data. A key feature of NMF is the ability to identify patterns that together explain the data as a linear combination of ...
Kossenkov Andrew V, Wang Guoli, Ochs Michael F   +2 more
doaj   +1 more source

Non-Negative Matrix Factorization of Simulated High Density Surface Electromyograms Reflects Both Muscle Excitation and Muscle Shortening

IEEE Access, 2021
We analyzed muscle excitation estimation systematically by Non-negative matrix factorization (NMF) from surface electromyograms (EMG) during dynamic contractions of biceps brachii (BB) muscles.
Martin Savc, Ales Holobar
doaj   +1 more source

ShinyButchR: Interactive NMF-based decomposition workflow of genome-scale datasets

Biology Methods and Protocols, 2020
Non-negative matrix factorization (NMF) has been widely used for the analysis of genomic data to perform feature extraction and signature identification due to the interpretability of the decomposed signatures.
Andrés Quintero, Daniel Hübschmann, N. Kurzawa, Sebastian Steinhauser, Philipp Rentzsch, Stephen Krämer, Carolin Andresen, Jeongbin Park, R. Eils, M. Schlesner, C. Herrmann   +10 more
semanticscholar   +1 more source

Platelet-Related Molecular Subtype to Predict Prognosis in Hepatocellular Carcinoma

Journal of Hepatocellular Carcinoma, 2022
Genhao Zhang Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of ChinaCorrespondence: Genhao Zhang, Email wangshuya617@bjmu.edu.cnPurpose: Complex crosstalk between tumor cells and ...
Zhang G
doaj  

Estimating the Rank of a Nonnegative Matrix Factorization Model for Automatic Music Transcription Based on Stein’s Unbiased Risk Estimator

Applied Sciences, 2020
In this paper, methods to estimate the number of basis vectors of the nonnegative matrix factorization (NMF) of automatic music transcription (AMT) systems are proposed.
Seokjin Lee
doaj   +1 more source

Kaolinite: NMF Intercalates

Clays and Clay Minerals, 1993
AbstractBulk and size-fractionated kaolinites from seven localities in Australia as well as the Clay Minerals Society Source Clays Georgia KGa-1 and KGa-2 have been studied by X-ray diffraction (XRD), laser scattering, and electron microscopy in order to understand the variation of particle characteristics across a range of environments and to ...
Uwins, P.J.R., Mackinnon, I.D.R., Thompson, J.G., Yago, A.J.E.   +3 more
openaire   +2 more sources

Perbandingan Koefisien NMF dan Proyeksi Bilinear Space Sebagai Fitur pada Pengenalan Ekspresi Wajah Manusia

ComTech, 2012
NMF is one new developed method to make the part-based representation of non-negative data, such as human face image. NMF can reduce the dimension of high dimensional data such as multimedia data. In many researches,NMF can also used as a classification
William Salim
doaj   +1 more source

Musical instrument classification using non-negative matrix factorization algorithms and subset feature selection [PDF]

, 2006
In this paper, a class of algorithms for automatic classification of individual musical instrument sounds is presented. Several perceptual features used in sound classification applications as well as MPEG-7 descriptors were measured for 300 sound ...
Benetos, E., Kotropoulos, C., Kotti, M.
core   +1 more source