Results 31 to 40 of about 24,609 (137)

A block Arnoldi-Chebyshev method for computing the leading eigenpairs of large sparse unsymmetric matrices

open access: yesNumerische Mathematik, 1993
We describe a block version of Arnoldi's method for computing a few eigenvalues with largest or smallest real parts. The method is accelerated via Chebyshev iteration and a procedure is developed to identify the optimal ellipse which encloses the spectrum.
openaire   +2 more sources

Singular Value Decomposition-Based Adaptive Sampling Approximate Message Passing Net for Sparse-View CT Reconstruction

open access: yesIEEE Photonics Journal
Sparse-viewcomputed tomography (CT) imaging is a promising technique for reducing radiation dose and accelerating data acquisition in medical imaging.
Zhenhua Wu, Jiafei Xu, Lixia Yang
doaj   +1 more source

A Meshless Method for Optimal Control of Parabolic PDEs Using Rational Radial Basis Functions [PDF]

open access: yesControl and Optimization in Applied Mathematics
This study introduces an innovative approach for addressing optimal control problems related to parabolic partial differential equations (PDEs) through the application of rational radial basis functions (RBFs).
Afrah Kadhim Saud Al-tameemi   +2 more
doaj   +1 more source

Biological Sequence Representation Methods and Recent Advances: A Review

open access: yesBiology
Biological-sequence representation methods are pivotal for advancing machine learning in computational biology, transforming nucleotide and protein sequences into formats that enhance predictive modeling and downstream task performance.
Hongwei Zhang   +6 more
doaj   +1 more source

Efficient cross-validation traversals in feature subset selection

open access: yesScientific Reports, 2022
Sparse and robust classification models have the potential for revealing common predictive patterns that not only allow for categorizing objects into classes but also for generating mechanistic hypotheses.
Ludwig Lausser   +4 more
doaj   +1 more source

Elegante: A Machine Learning-Based Threads Configuration Tool for SpMV Computations on Shared Memory Architecture

open access: yesInformation
The sparse matrix–vector product (SpMV) is a fundamental computational kernel utilized in a diverse range of scientific and engineering applications. It is commonly used to solve linear and partial differential equations.
Muhammad Ahmad   +5 more
doaj   +1 more source

ProdMX: Rapid query and analysis of protein functional domain based on compressed sparse matrices

open access: yesComputational and Structural Biotechnology Journal, 2020
Large-scale protein analysis has been used to characterize large numbers of proteins across numerous species. One of the applications is to use as a high-throughput screening method for pathogenicity of genomes.
Visanu Wanchai   +2 more
doaj   +1 more source

A 2.5D Generalized Finite Difference Method for Elastic Wave Propagation Problems

open access: yesMathematics
The analysis of elastic wave propagation is a critical problem in both science and engineering, with applications in structural health monitoring and seismic wave analysis.
Hao Chang   +4 more
doaj   +1 more source

randPedPCA: rapid approximation of principal components from large pedigrees

open access: yesGenetics Selection Evolution
Background Pedigrees continue to be extremely important in agriculture and conservation genetics, with the pedigrees of modern breeding programmes easily comprising millions of records.
Hanbin Lee   +3 more
doaj   +1 more source

Collocation method for solving fractional reaction–diffusion problem arising in chemistry

open access: yesScientific Reports
In this study, a numerical approach was developed to approximate the solution of the Caputo-type fractional reaction–diffusion problem. In the proposed method, the Caputo fractional derivative and the integer derivatives of the equation are obtained ...
Jalil Rashidinia, Arefeh Momeni
doaj   +1 more source

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