• Sparse matrixvector multiplication (SpMV) of the form y = Ax is a widely used computational kernel existing in many scientific applications. The input...
    1 KB (111 words) - 18:28, 12 August 2023
  • Thumbnail for Sparse matrix
    Leiserson, Charles E. (2009). Parallel sparse matrix-vector and matrix-transpose-vector multiplication using compressed sparse blocks (PDF). ACM Symp. on Parallelism...
    25 KB (3,240 words) - 03:14, 14 January 2025
  • Because matrix multiplication is such a central operation in many numerical algorithms, much work has been invested in making matrix multiplication algorithms...
    39 KB (4,472 words) - 21:57, 18 March 2025
  • 5\end{smallmatrix}}\right]} . In geometry, a diagonal matrix may be used as a scaling matrix, since matrix multiplication with it results in changing scale (size)...
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  • complexity of matrix multiplication dictates how quickly the operation of matrix multiplication can be performed. Matrix multiplication algorithms are a central...
    35 KB (4,286 words) - 21:57, 18 March 2025
  • Thumbnail for Conjugate gradient method
    perform the matrixvector and transpose matrixvector multiplications. Therefore, CGNR is particularly useful when A is a sparse matrix since these operations...
    51 KB (8,446 words) - 15:27, 23 April 2025
  • a vector space. Specifically, when the vector space comprises matrices, such norms are referred to as matrix norms. Matrix norms differ from vector norms...
    28 KB (4,787 words) - 04:58, 22 February 2025
  • the matrix multiplication A v = λ v , {\displaystyle A\mathbf {v} =\lambda \mathbf {v} ,} where the eigenvector v is an n by 1 matrix. For a matrix, eigenvalues...
    102 KB (13,619 words) - 18:41, 19 April 2025
  • Thumbnail for Hypergraph
    edges between two vertices P system – Computational model Sparse matrixvector multiplication – Computation routine Petri Net – Model to describe distributed...
    47 KB (6,201 words) - 06:16, 14 March 2025
  • algebra operations such as vector addition, scalar multiplication, dot products, linear combinations, and matrix multiplication. They are the de facto standard...
    36 KB (3,908 words) - 09:19, 26 December 2024
  • Thumbnail for Matrix (mathematics)
    be expressed as multiplication of a two-component vector with a two-by-two matrix called ray transfer matrix analysis: the vector's components are the...
    108 KB (13,657 words) - 00:07, 4 May 2025
  • n} matrix, it is a property of matrix multiplication that I m A = A I n = A . {\displaystyle I_{m}A=AI_{n}=A.} In particular, the identity matrix serves...
    6 KB (841 words) - 21:05, 14 April 2025
  • Thumbnail for Transformer (deep learning architecture)
    the complex numbers, but since complex multiplication can be implemented as real 2-by-2 matrix multiplication, this is a mere notational difference. Like...
    106 KB (13,091 words) - 21:14, 29 April 2025
  • Thumbnail for Principal component analysis
    eliminate this loss of orthogonality. NIPALS reliance on single-vector multiplications cannot take advantage of high-level BLAS and results in slow convergence...
    117 KB (14,895 words) - 17:43, 23 April 2025
  • severally, with respect to the scalar argument in scalar–vector multiplication and with respect to its vector argument. Abusing terminology, some engineers[who...
    36 KB (5,937 words) - 20:36, 2 May 2025
  • gains by using MPI-IO. For example, an implementation of sparse matrix-vector multiplications using the MPI I/O library shows a general behavior of minor...
    51 KB (6,501 words) - 12:16, 30 April 2025
  • hierarchical matrices (H-matrices) are used as data-sparse approximations of non-sparse matrices. While a sparse matrix of dimension n {\displaystyle n} can be represented...
    15 KB (2,149 words) - 21:04, 14 April 2025
  • derived from the spectral theorem. A (nonzero) vector v of dimension N is an eigenvector of a square N × N matrix A if it satisfies a linear equation of the...
    40 KB (5,590 words) - 01:51, 27 February 2025
  • Thumbnail for Fast Fourier transform
    include: fast large-integer multiplication algorithms and polynomial multiplication, efficient matrixvector multiplication for Toeplitz, circulant and...
    67 KB (7,814 words) - 18:05, 2 May 2025
  • Thumbnail for Exponentiation
    When n is a positive integer, exponentiation corresponds to repeated multiplication of the base: that is, bn is the product of multiplying n bases: b n...
    104 KB (13,629 words) - 02:41, 30 April 2025
  • non-negative matrix factorization has a long history under the name "self modeling curve resolution". In this framework the vectors in the right matrix are continuous...
    68 KB (7,780 words) - 23:09, 26 August 2024
  • Triangular matrix Tridiagonal matrix Block matrix Sparse matrix Hessenberg matrix Hessian matrix Vandermonde matrix Stochastic matrix Toeplitz matrix Circulant...
    5 KB (377 words) - 12:12, 30 October 2023
  • Thumbnail for Z-order curve
    Charles E. (2009), "Parallel sparse matrix-vector and matrix-transpose-vector multiplication using compressed sparse blocks", ACM Symp. on Parallelism...
    21 KB (2,681 words) - 19:21, 8 February 2025
  • the algorithm is the multiplication of matrix A {\displaystyle A} by a vector, so it is effective for a very large sparse matrix with appropriate implementation...
    13 KB (2,478 words) - 06:30, 21 December 2024
  • units. The scan operation has uses in e.g., quicksort and sparse matrix-vector multiplication. The scatter operation is most naturally defined on the vertex...
    71 KB (7,033 words) - 19:15, 29 April 2025
  • Kronecker product (category Matrix theory)
    block matrix. It is a specialization of the tensor product (which is denoted by the same symbol) from vectors to matrices and gives the matrix of the...
    40 KB (6,085 words) - 08:27, 18 January 2025
  • Thumbnail for Roofline model
    Georgios; Koziris, Nectarios (2008-01-01). "Optimizing sparse matrix-vector multiplication using index and value compression". Proceedings of the 5th...
    16 KB (1,701 words) - 11:28, 14 March 2025
  • Thumbnail for Discrete Fourier transform
    finite-dimensional vector space, the DFT expression can also be written in terms of a DFT matrix; when scaled appropriately it becomes a unitary matrix and the Xk...
    76 KB (12,333 words) - 05:19, 3 May 2025
  • the zero matrix. Identity matrix, the multiplicative identity for matrices Matrix of ones, a matrix where all elements are one Nilpotent matrix Single-entry...
    4 KB (590 words) - 21:09, 14 April 2025
  • Thumbnail for Librsb
    strided: Sparse matrix-vector multiplication. Sparse matrix-dense matrix multiplication. Sparse matrix-vector triangular solve. Sparse matrix-dense matrix triangular...
    4 KB (228 words) - 20:55, 9 August 2023