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(scatter matrix)

См. также в других словарях:

  • Scatter matrix — In multivariate statistics and probability theory, the scatter matrix is a statistic that is used to make estimates of the covariance matrix of the multivariate normal distribution. (The scatter matrix is unrelated to the scattering matrix of… …   Wikipedia

  • Centering matrix — In mathematics and multivariate statistics, the centering matrix [John I. Marden, Analyzing and Modeling Rank Data , Chapman Hall, 1995, ISBN 0412995212, page 59.] is a symmetric and idempotent matrix, which when multiplied with a vector has the… …   Wikipedia

  • scattering matrix — noun : s matrix herein * * * scattering matrix noun (physics) A matrix in which particles that result from high energy collisions are made to scatter in various directions (also Sˈ matrix) • • • Main Entry: ↑scatter …   Useful english dictionary

  • Ceramic matrix composite — Fracture surface of a fiber reinforced ceramic composed of SiC fibers and SiC matrix. The fiber pull out mechanism shown is the key to CMC properties …   Wikipedia

  • Growth-share matrix — The BCG matrix (aka B.C.G. analysis, BCG matrix, Boston Box, Boston Matrix, Boston Consulting Group analysis) is a chart that had been created by Bruce Henderson for the Boston Consulting Group in 1970 to help corporations with analyzing their… …   Wikipedia

  • Principal component analysis — PCA of a multivariate Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the (0.878, 0.478) direction and of 1 in the orthogonal direction. The vectors shown are the eigenvectors of the covariance matrix scaled by… …   Wikipedia

  • Principal components analysis — Principal component analysis (PCA) is a vector space transform often used to reduce multidimensional data sets to lower dimensions for analysis. Depending on the field of application, it is also named the discrete Karhunen Loève transform (KLT),… …   Wikipedia

  • Estimation of covariance matrices — In statistics, sometimes the covariance matrix of a multivariate random variable is not known but has to be estimated. Estimation of covariance matrices then deals with the question of how to approximate the actual covariance matrix on the basis… …   Wikipedia

  • List of mathematics articles (S) — NOTOC S S duality S matrix S plane S transform S unit S.O.S. Mathematics SA subgroup Saccheri quadrilateral Sacks spiral Sacred geometry Saddle node bifurcation Saddle point Saddle surface Sadleirian Professor of Pure Mathematics Safe prime Safe… …   Wikipedia

  • Wishart distribution — Probability distribution name =Wishart type =density pdf cdf parameters = n > 0! deg. of freedom (real) mathbf{V} > 0, scale matrix ( pos. def) support =mathbf{W}! is positive definite pdf =frac{left|mathbf{W} ight|^frac{n p 1}{2… …   Wikipedia

  • Outer product — For outer product in geometric algebra, see exterior product. In linear algebra, the outer product typically refers to the tensor product of two vectors. The result of applying the outer product to a pair of vectors is a matrix. The name… …   Wikipedia

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