Results 21 to 30 of about 24,609 (137)

Symbolic algorithm for solving SLAEs with multi-diagonal coefficient matrices

open access: yesDiscrete and Continuous Models and Applied Computational Science
Systems of linear algebraic equations with multi-diagonal coefficient matrices may arise after many different scientific and engineering problems, as well as problems of the computational linear algebra where finding the solution of such a system of ...
Veneva Milena
doaj   +1 more source

Quantum-inspired algorithms in practice [PDF]

open access: yesQuantum, 2020
We study the practical performance of quantum-inspired algorithms for recommendation systems and linear systems of equations. These algorithms were shown to have an exponential asymptotic speedup compared to previously known classical methods for ...
Juan Miguel Arrazola   +3 more
doaj   +1 more source

Direct multiplicative methods for sparse matrices. Linear programming [PDF]

open access: yesКомпьютерные исследования и моделирование, 2017
Multiplicative methods for sparse matrices are best suited to reduce the complexity of operations solving systems of linear equations performed on each iteration of the simplex method.
Anastasiya Borisovna Sviridenko
doaj   +1 more source

Element Aggregation for Estimation of High-Dimensional Covariance Matrices

open access: yesMathematics
This study addresses the challenge of estimating high-dimensional covariance matrices in financial markets, where traditional sparsity assumptions often fail due to the interdependence of stock returns across sectors.
Jingying Yang
doaj   +1 more source

A neighbor pixel modelled ROI for mammogram classification

open access: yesArray
The effective selection of the Region of Interest (ROI) plays a vital role in enhancing the performance of computer-aided detection and diagnosis (CADx) systems.
Kanadam Karteeka Pavan   +5 more
doaj   +1 more source

Hierarchical Matrices Method and Its Application in Electromagnetic Integral Equations

open access: yesInternational Journal of Antennas and Propagation, 2012
Hierarchical (H-) matrices method is a general mathematical framework providing a highly compact representation and efficient numerical arithmetic. When applied in integral-equation- (IE-) based computational electromagnetics, H-matrices can be regarded ...
Han Guo, Jun Hu, Hanru Shao, Zaiping Nie
doaj   +1 more source

Implementation of Basic Operations for Sparse Matrices when Solving a Generalized Eigenvalue Problem in the ACELAN-COMPOS Complex

open access: yesAdvanced Engineering Research, 2023
Introduction. The widespread use of piezoelectric materials in various industries stimulates the study of their physical characteristics and determines the urgency of such research.
P. A. Oganesyan, O. O. Shtein
doaj   +1 more source

Real-Time Operator Evolution in Two and Three Dimensions via Sparse Pauli Dynamics

open access: yesPRX Quantum
We study real-time operator evolution using sparse Pauli dynamics, a recently developed method for simulating expectation values of quantum circuits. On the examples of energy and charge diffusion in one-dimensional (1D) spin chains and sudden quench ...
Tomislav Begušić, Garnet Kin-Lic Chan
doaj   +1 more source

A Decomposition-Based Approach for the Multiperiod Multiproduct Distribution Planning Problem

open access: yesJournal of Applied Mathematics, 2014
We address the most general case of multiperiod, multiproduct network planning problems, where we allow spoilage on arcs and storage at nodes. In our models, all network parameters change over time and products.
S. Ahmad Hosseini   +2 more
doaj   +1 more source

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