Results 21 to 30 of about 82,972,811 (208)

Identification of Matrices Having a Sparse Representation [PDF]

open access: yes, 2008
We consider the problem of recovering a matrix from its action on a known vector in the setting where the matrix can be represented efficiently in a known matrix dictionary.
Pfander, Goetz E.   +6 more
core   +1 more source

Jointly Iterative Adaptive Approach Based Space Time Adaptive Processing Using MIMO Radar

open access: yesIEEE Access, 2018
To solve the problem of large training samples requirement of space time adaptive processing (STAP), a jointly sparse matrices recovery-based method is proposed for clutter plus noise covariance matrix estimation by exploiting the transmitting waveform ...
Weike Feng   +4 more
doaj   +1 more source

SOLUTION TO FLEET SIZE OF DOCKLESS BIKE-SHARING STATION BASED ON MATRIX ANALYSIS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Aiming at the problems of the lack of reasonable judgment of fleet size and non-optimization of rebalancing for dockless bike-sharing station, based on the usage characteristics of dockless bike-sharing, this paper demonstrates that the Markov chain is ...
Y. Zhai, J. Liu, J. Du, J. Chen
doaj   +1 more source

Combinatorial Regression and Improved Basis Pursuit for Sparse Estimation [PDF]

open access: yes, 2012
Sparse representations accurately model many real-world data sets. Some form of sparsity is conceivable in almost every practical application, from image and video processing, to spectral sensing in radar detection, to bio-computation and genomic signal ...
Khajehnejad, M. Amin
core   +1 more source

Block Preconditioning Matrices for the Newton Method to Compute the Dominant λ-Modes Associated with the Neutron Diffusion Equation

open access: yesMathematical and Computational Applications, 2019
In nuclear engineering, the λ -modes associated with the neutron diffusion equation are applied to study the criticality of reactors and to develop modal methods for the transient analysis. The differential eigenvalue problem that needs to be
Amanda Carreño   +5 more
doaj   +1 more source

Off-grid direction-of-arrival estimation for wideband noncircular sources

open access: yesETRI Journal, 2023
Researchers have recently shown an increased interest in estimating the direction-of-arrival (DOA) of wideband noncircular sources, but existing studies have been restricted to subspace-based methods.
Xiaoyu Zhang   +3 more
doaj   +1 more source

Methods and effective algorithms for solving multidimensional integral equations

open access: yesРоссийский технологический журнал, 2022
Objectives. Integral equations have long been used in mathematical physics to demonstrate existence and uniqueness theorems for solving boundary value problems for differential equations. However, despite integral equations have a number of advantages in
A. B. Samokhin
doaj   +1 more source

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

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