Results 31 to 40 of about 412,590 (166)
Latent Multi-View Semi-Nonnegative Matrix Factorization with Block Diagonal Constraint
Axioms, 2022 Multi-view clustering algorithms based on matrix factorization have gained enormous development in recent years. Although these algorithms have gained impressive results, they typically neglect the spatial structures that the latent data representation ...
Lin Yuan +3 more
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Cross-social-network user alignment research based on multi-dimensional user features
Systems Science & Control EngineeringAccurately aligning the same users on different flat social networks to merge user information and create more nuanced user profiles is critical. However, the current research in this area faces challenges related to low efficiency and inadequate ...
Tao Zhao +4 more
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Pivot-Free Block Matrix Inversion [PDF]
2006 Eighth International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, 2006 We present a pivot-free deterministic algorithm for the inversion of block matrices. The method is based on the Moore-Penrose inverse and is applicable over certain general classes of rings. This improves on previous methods that required at least one invertible on-diagonal block, and that otherwise required row- or column-based pivoting, disrupting ...
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On Factorization and Calculation of Determinant of Block Matrices with Triangular Submatrices
Journal of New TheoryIn this paper, we consider some block matrices of dimension $nm\times{nm}$ whose components are triangular matrices of dimension $n\times{n}$. We prove that the determinant of such block matrices is determined only by the diagonal elements of their ...
Fatma Altun, Ufuk Kaya
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Abstract and Applied Analysis, 2014 We first give the block style spectral decomposition of arbitrary block skew circulant matrix with skew circulant blocks. Secondly, we obtain the singular value of block skew circulant matrix with skew circulant blocks as well.
Zhaolin Jiang, Juan Li, Jianwei Zhou
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Deficiency indices of block Jacobi matrices and Miura transformation
Special Matrices, 2022 We study the infinite Jacobi block matrices under the discrete Miura-type transformations which relate matrix Volterra and Toda lattice systems to each other and the situations when the deficiency indices of the corresponding operators are the same.
Osipov Andrey
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Geodesy and Geodynamics, 2016 The block-diagonal least squares method, which theoretically has specific requirements for the observation data and the spatial distribution of its precision, plays an important role in ultra-high degree gravity field determination. On the basis of block-
Wei Liang +3 more
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A Note on the Eigenvalue Analysis of the SIMPLE Preconditioning for Incompressible Flow
Journal of Applied Mathematics, 2012 We consider the SIMPLE preconditioning for block two-by-two generalized saddle point problems; this is the general nonsymmetric, nonsingular case where the (1,2) block needs not to equal the transposed (2,1) block, and the (2,2) block may not be zero ...
Shi-Liang Wu, Feng Chen, Xiao-Qi Niu
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Roots of Characteristic Polynomial Sequences in Iterative Block Cyclic Reductions
Mathematics, 2021 The block cyclic reduction method is a finite-step direct method used for solving linear systems with block tridiagonal coefficient matrices. It iteratively uses transformations to reduce the number of non-zero blocks in coefficient matrices.
Masato Shinjo +3 more
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ACCURACY ESTIMATION OF METHOD FOR PARAMETERS MEASUREMENT OF PULSE SIGNALS AND OFDM (N-OFDM) SIGNALS
Sučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2018 For the first time, with the help of mathematical modelling, clarified the properties of the received analytical relations and set the limits possibilities of OFDM (N-OFDM) signal demodulation method in the background of impulse signals in the integrated
Vadym I. Slusar +2 more
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