• In mathematics and multivariate statistics, the centering matrix is a symmetric and idempotent matrix, which when multiplied with a vector has the same...
    5 KB (959 words) - 19:56, 28 August 2024
  • The Matrix is a 1999 science fiction action film written and directed by the Wachowskis. It is the first installment in the Matrix film series, starring...
    168 KB (16,760 words) - 14:06, 31 August 2024
  • {\displaystyle \,C_{n}} is the n-by-n centering matrix. The maximum likelihood estimate, given n samples, for the covariance matrix of a multivariate normal distribution...
    3 KB (420 words) - 16:30, 15 January 2024
  • Thumbnail for Multidimensional scaling
    D^{(2)}=[d_{ij}^{2}]} Apply double centering: B = − 1 2 C D ( 2 ) C {\textstyle B=-{\frac {1}{2}}CD^{(2)}C} using the centering matrix C = I − 1 n J n {\textstyle...
    19 KB (2,847 words) - 22:00, 1 August 2024
  • Thumbnail for List of named matrices
    probability theory. Bernoulli matrix — a square matrix with entries +1, −1, with equal probability of each. Centering matrix — a matrix which, when multiplied...
    31 KB (1,336 words) - 00:12, 30 November 2023
  • In mathematics, the matrix representation of conic sections permits the tools of linear algebra to be used in the study of conic sections. It provides...
    19 KB (3,167 words) - 18:32, 21 September 2023
  • Thumbnail for Matrix multiplication
    columns in the first matrix must be equal to the number of rows in the second matrix. The resulting matrix, known as the matrix product, has the number...
    41 KB (6,581 words) - 21:45, 2 August 2024
  • Matrix Resurrections is a 2021 American science fiction action film produced, co-written, and directed by Lana Wachowski, and the first in the Matrix...
    103 KB (9,513 words) - 03:25, 29 July 2024
  • Thumbnail for Projection (linear algebra)
    in the definition of a Riemannian submersion. Centering matrix, which is an example of a projection matrix. Dykstra's projection algorithm to compute the...
    34 KB (5,793 words) - 13:01, 13 August 2024
  • Thumbnail for Isomap
    is the elementwise square of the geodesic distance matrix D = [Dij], H is the centering matrix, given by H = I n − 1 N e N e N T , where  e N = [ 1...
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  • Thumbnail for Multivariate normal distribution
    parentheses is thus the K × K {\displaystyle K\times K} centering matrix) The Fisher information matrix for estimating the parameters of a multivariate normal...
    65 KB (9,519 words) - 19:30, 12 August 2024
  • rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix R = [...
    99 KB (15,019 words) - 17:05, 31 July 2024
  • Thumbnail for Ordinary least squares
    {1}{n}}J_{n}} , and J n {\textstyle J_{n}} is an n×n matrix of ones. ( L {\displaystyle L} is a centering matrix which is equivalent to regression on a constant;...
    64 KB (8,935 words) - 02:22, 18 May 2024
  • n-by-n square matrix A is called invertible (also nonsingular, nondegenerate or rarely regular) if there exists an n-by-n square matrix B such that A...
    46 KB (6,940 words) - 00:07, 6 July 2024
  • } for some m × n {\displaystyle m\times n} matrix A {\displaystyle A} , called the transformation matrix of T {\displaystyle T} .[citation needed] Note...
    24 KB (3,814 words) - 09:05, 30 August 2024
  • In computer vision a camera matrix or (camera) projection matrix is a 3 × 4 {\displaystyle 3\times 4} matrix which describes the mapping of a pinhole camera...
    12 KB (2,083 words) - 03:23, 28 June 2023
  • covariance matrix of rank k − 1. In the special case where k = n and where the pi are all equal, the covariance matrix is the centering matrix. The entries...
    39 KB (6,409 words) - 11:54, 20 June 2024
  • Thumbnail for Covariance matrix
    covariance matrix (also known as auto-covariance matrix, dispersion matrix, variance matrix, or variance–covariance matrix) is a square matrix giving the...
    34 KB (5,418 words) - 23:44, 30 May 2024
  • Thumbnail for Extracellular matrix
    In biology, the extracellular matrix (ECM), also called intercellular matrix (ICM), is a network consisting of extracellular macromolecules and minerals...
    36 KB (4,084 words) - 09:22, 12 August 2024
  • In linear algebra, a diagonal matrix is a matrix in which the entries outside the main diagonal are all zero; the term usually refers to square matrices...
    17 KB (2,466 words) - 02:48, 13 May 2024
  • vector calculus, the Jacobian matrix (/dʒəˈkoʊbiən/, /dʒɪ-, jɪ-/) of a vector-valued function of several variables is the matrix of all its first-order partial...
    25 KB (3,593 words) - 19:18, 22 August 2024
  • Thumbnail for Toyota Matrix
    The Toyota Matrix, officially named Toyota Corolla Matrix, is a compact hatchback manufactured by Toyota Motor Manufacturing Canada in Cambridge, Ontario...
    33 KB (3,030 words) - 10:12, 15 July 2024
  • _{m}\mathbf {1} _{m}^{T}} is the centering matrix, I m {\displaystyle \mathbf {I} _{m}} is the m-dimensional identity matrix (m: the number of samples), 1...
    58 KB (6,933 words) - 03:15, 11 March 2024
  • Identity for Rank Augmenting Matrices with Application to Centering", SIAM Journal on Matrix Analysis and Applications, 13 (1992)659-662, doi:10.1137/0613040...
    17 KB (2,090 words) - 10:05, 3 July 2024
  • 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 (13,603 words) - 06:05, 19 August 2024
  • A risk matrix is a matrix that is used during risk assessment to define the level of risk by considering the category of likelihood (often confused with...
    13 KB (1,430 words) - 00:55, 18 July 2024
  • abstract algebra, a matrix ring is a set of matrices with entries in a ring R that form a ring under matrix addition and matrix multiplication. The set...
    13 KB (1,812 words) - 23:17, 26 March 2024
  • Thumbnail for Centrosymmetric matrix
    in linear algebra and matrix theory, a centrosymmetric matrix is a matrix which is symmetric about its center. An n × n matrix A = [Ai, j] is centrosymmetric...
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  • Matrix (1999), a major box-office success for which they won the Saturn Award for Best Director. They wrote and directed its two sequels, The Matrix Reloaded...
    154 KB (11,659 words) - 22:21, 24 August 2024
  • linear algebra, an idempotent matrix is a matrix which, when multiplied by itself, yields itself. That is, the matrix A {\displaystyle A} is idempotent...
    9 KB (1,701 words) - 03:49, 4 May 2024