Results 1 to 10 of about 11,649,749 (258)

Scheme of extending elliptic curve method to three phases

open access: yes网络与信息安全学报, 2018
Elliptic curve method for integer factorization (ECM) is one of the most popular integer factorization algorithms,and it was firstly proposed by Lenstra in 1985.The original ECM contained just first phase.Since its invention,researches about the ...
Guiwen LUO
doaj   +3 more sources

Discriminative Multiple Kernel Concept Factorization for Data Representation

open access: yesIEEE Access, 2020
Concept Factorization (CF) improves Nonnegative matrix factorization (NMF), which can be only performed in the original data space, by conducting factorization within proper kernel space where the structure of data become much clear than the original ...
Lin Mu   +5 more
doaj   +1 more source

Adaptive Kernel Graph Nonnegative Matrix Factorization

open access: yesInformation, 2023
Nonnegative matrix factorization (NMF) is an efficient method for feature learning in the field of machine learning and data mining. To investigate the nonlinear characteristics of datasets, kernel-method-based NMF (KNMF) and its graph-regularized ...
Rui-Yu Li, Yu Guo, Bin Zhang
doaj   +1 more source

A Quasi-Explicit Method Applied to Missing Boundary Data Reconstruction for the Stokes System

open access: yesAxioms
In this paper, we study the data completion problem for the Cauchy–Stokes equation in a cylindrical domain, Ω. Neumann and Dirichlet boundary conditions are prescribed on part of the overdetermined boundary, Γ0, and the goal is to complete the data on ...
Abdulaziz H. Alharbi   +3 more
doaj   +1 more source

A Robust Manifold Graph Regularized Nonnegative Matrix Factorization Algorithm for Cancer Gene Clustering

open access: yesMolecules, 2017
Detecting genomes with similar expression patterns using clustering techniques plays an important role in gene expression data analysis. Non-negative matrix factorization (NMF) is an effective method for clustering the analysis of gene expression data ...
Rong Zhu   +3 more
doaj   +1 more source

Sparse data embedding and prediction by tropical matrix factorization

open access: yesBMC Bioinformatics, 2021
Background Matrix factorization methods are linear models, with limited capability to model complex relations. In our work, we use tropical semiring to introduce non-linearity into matrix factorization models.
Amra Omanović   +3 more
doaj   +1 more source

Unique Symbolic Factorization for Fast Contingency Analysis Using Full Newton–Raphson Method

open access: yesEnergies, 2023
Contingency analysis plays an important role in assessing the static security of a network. Its purpose is to check whether a system can operate safely when some elements are out of service.
Hakim Bennani   +2 more
doaj   +1 more source

Factorization of the Non-Normal Hamiltonian of Reggeon Field Theory in Bargmann Space

open access: yesMathematics
In this paper, we present a “non-linear” factorization of a family of non-normal operators arising from Gribov’s theory of the following form: Hλ′,μ,λ=λ′A*2A2+μA*A+iλA*(A+A*)A, where the quartic Pomeron coupling λ′, the Pomeron intercept μ and the triple
Abdelkader Intissar
doaj   +1 more source

Dynamical Equations, Invariants and Spectrum Generating Algebras of Mechanical Systems with Position-Dependent Mass

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2013
We analyze the dynamical equations obeyed by a classical system with position-dependent mass. It is shown that there is a non-conservative force quadratic in the velocity associated to the variable mass.
Sara Cruz y Cruz, Oscar Rosas-Ortiz
doaj   +1 more source

Robust Local Learning and Discriminative Concept Factorization for Data Representation

open access: yesIEEE Access, 2018
Concept factorization (CF), as a matrix factorization method, has been applied widely in obtaining an optimal data representation and has yielded impressive results. However, some shortcomings exist in the existing CF method.
Wei Jiang   +4 more
doaj   +1 more source

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