Results 11 to 20 of about 150,932 (264)

Matrix Decomposition and Applications

open access: yesCoRR, 2022
In 1954, Alston S. Householder published Principles of Numerical Analysis, one of the first modern treatments on matrix decomposition that favored a (block) LU decomposition-the factorization of a matrix into the product of lower and upper triangular matrices.
openaire   +2 more sources

Multiresolution matrix factorisation as a compression method for smart meter data

open access: yesThe Journal of Engineering, 2020
The development of a smart grid electricity distribution network with advanced technology in smart metering will produce a massive amount of data. However, the limitation in communication network bandwidth makes it hard to transmit these data to the ...
Arfah Ahmad   +5 more
doaj   +1 more source

RMPD: Method for Enhancing the Robustness of Recommendations With Attack Environments

open access: yesIEEE Access, 2021
Personalized item recommendation has become a hot topic research among academic and industry community. But lots of purposeful fraudsters maybe perform different attacks on the recommender system to insert fake ratings, which could reduce the ...
Qi Ding   +4 more
doaj   +1 more source

Non-unitary CMV-decomposition

open access: yesSpecial Matrices, 2020
An important decomposition for unitary matrices, the CMV-decomposition, is extended to general non-unitary matrices. This relates to short recurrence relations constructing biorthogonal bases for a particular pair of extended Krylov subspaces.
Van Buggenhout Niel   +2 more
doaj   +1 more source

Orthogonal tucker decomposition using factor priors for 2D+3D facial expression recognition

open access: yesIET Biometrics, 2021
In this article, an effective approach is proposed to recognise the 2D+3D facial expression automatically based on orthogonal Tucker decomposition using factor priors (OTDFPFER).
Yunfang Fu   +4 more
doaj   +1 more source

On decomposition of k-tridiagonal ℓ-Toeplitz matrices and its applications

open access: yesSpecial Matrices, 2015
We consider a k-tridiagonal ℓ-Toeplitz matrix as one of generalizations of a tridiagonal Toeplitz matrix. In the present paper, we provide a decomposition of the matrix under a certain condition.
Ohashi A., Sogabe T., Usuda T.S.
doaj   +1 more source

Decompose Boolean Matrices with Correlation Clustering

open access: yesEntropy, 2021
One of the tasks of data science is the decomposition of large matrices in order to understand their structures. A special case of this is when we decompose relations, i.e., logical matrices.
László Aszalós
doaj   +1 more source

Amplitude-Preserved Wave Equation: An Example to Image the Gas Hydrate System

open access: yesEnergies, 2021
Natural gas hydrate is an important energy source. Therefore, it is extremely important to provide a clear imaging profile to determine its distribution for energy exploration. In view of the problems existing in conventional migration methods, e.g., the
Jiachun You   +4 more
doaj   +1 more source

Low-Rank Based Image Analyses for Pathological MR Image Segmentation and Recovery

open access: yesFrontiers in Neuroscience, 2019
The presence of pathologies in magnetic resonance (MR) brain images causes challenges in various image analysis areas, such as registration, atlas construction and atlas-based segmentation.
Chuanlu Lin   +3 more
doaj   +1 more source

Factorisation Path Based Refactorisation for High-Performance LU Decomposition in Real-Time Power System Simulation

open access: yesEnergies, 2021
The integration of renewable energy sources into modern power systems requires simulations with smaller step sizes, larger network models and the incorporation of complex nonlinear component models.
Jan Dinkelbach   +4 more
doaj   +1 more source

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