Results 21 to 30 of about 535,226 (278)

Coarse-Grained Pruning of Neural Network Models Based on Blocky Sparse Structure

open access: yesEntropy, 2021
Deep neural networks may achieve excellent performance in many research fields. However, many deep neural network models are over-parameterized. The computation of weight matrices often consumes a lot of time, which requires plenty of computing resources.
Lan Huang   +5 more
doaj   +1 more source

Conditioning analysis of block incomplete factorization and its application to elliptic equations [PDF]

open access: yes, 1997
The paper deals with eigenvalue estimates for block incomplete fac- torization methods for symmetric matrices. First, some previous results on upper bounds for the maximum eigenvalue of preconditioned matrices are generalized to each eigenvalue.
Axelsson, Owe, Lu, Hao
core   +2 more sources

Deficiency Indices of Block Jacobi Matrices: Survey

open access: yesСовременная математика: Фундаментальные направления, 2021
The paper is a survey and concerns with infinite symmetric block Jacobi matrices J with m×m-matrix entries. We discuss several results on general block Jacobi matrices to be either self-adjoint or have maximal as well as intermediate deficiency indices ...
Viktoriya S. Budyka   +2 more
doaj   +1 more source

The norm of polynomials in large random and deterministic matrices [PDF]

open access: yes, 2011
Let X_N= (X_1^(N), ..., X_p^(N)) be a family of N-by-N independent, normalized random matrices from the Gaussian Unitary Ensemble. We state sufficient conditions on matrices Y_N =(Y_1^(N), ..., Y_q^(N)), possibly random but independent of X_N, for which ...
Male, C.
core   +5 more sources

Block LU factorizations of M-matrices [PDF]

open access: yesNumerische Mathematik, 1998
It is well known that any nonsingular M-matrix admits an LU factorization into M-matrices (with L and U lower and upper triangular respectively) and any singular M-matrix is permutation similar to an M-matrix which admits an LU factorization into M-matrices.
McDonald, J. J., Schneider, H.
openaire   +3 more sources

Block distance matrices

open access: yesThe Electronic Journal of Linear Algebra, 2007
In this paper, block distance matrices are introduced. Suppose F is a square block matrix in which each block is a symmetric matrix of some given order. If F is positive semidefinite, the block distance matrix D is defined as a matrix whose (i, j)-block is given by D ij = F ii +F jj -2F ij .
R. Balaji, Ravindra Bapat
openaire   +1 more source

On the Limiting Distribution of the Spectra of Random Block Matrices

open access: yesMathematics
The behavior of the spectra of symmetric block-type random matrices with symmetric blocks of high dimensionality is considered in this paper. Under minimal conditions regarding the distributions of matrix block elements (Lindeberg conditions), the ...
Alexander N. Tikhomirov
doaj   +1 more source

Block-encoding structured matrices for data input in quantum computing [PDF]

open access: yesQuantum
The cost of data input can dominate the run-time of quantum algorithms. Here, we consider data input of arithmetically structured matrices via $\textit{block encoding}$ circuits, the input model for the quantum singular value transform and related ...
Christoph Sünderhauf   +2 more
doaj   +1 more source

AAQAL: A Machine Learning-Based Tool for Performance Optimization of Parallel SPMV Computations Using Block CSR

open access: yesApplied Sciences, 2022
The sparse matrix–vector product (SpMV), considered one of the seven dwarfs (numerical methods of significance), is essential in high-performance real-world scientific and analytical applications requiring solution of large sparse linear equation systems,
Muhammad Ahmed   +6 more
doaj   +1 more source

Algebraic and toroidal representation of the genetic code

open access: yesFrontiers in Applied Mathematics and Statistics
The genetic code is a set of regulatory principles that control the translation of information encoded in messenger RNA (mRNA) into a sequence of amino acids.
Rodrigo Rodríguez-Gutiérrez   +3 more
doaj   +1 more source

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