?? gmmunpak.m
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function mix = gmmunpak(mix, p)%GMMUNPAK Separates a vector of Gaussian mixture model parameters into its components.%% Description% MIX = GMMUNPAK(MIX, P) takes a GMM data structure MIX and a single% row vector of parameters P and returns a mixture data structure% identical to the input MIX, except that the mixing coefficients% PRIORS, centres CENTRES and covariances COVARS are all set to the% corresponding elements of P.%% See also% GMM, GMMPAK%% Copyright (c) Christopher M Bishop, Ian T Nabney (1996, 1997)errstring = consist(mix, 'gmm');if ~errstring error(errstring);endmark1 = mix.ncentres;mark2 = mark1 + mix.ncentres*mix.nin;mix.priors = reshape(p(1:mark1), 1, mix.ncentres);mix.centres = reshape(p(mark1 + 1:mark2), mix.ncentres, mix.nin);switch mix.covar_type case 'spherical' mark3 = mix.ncentres*(2 + mix.nin); mix.covars = reshape(p(mark2 + 1:mark3), 1, mix.ncentres); case 'diag' mark3 = mix.ncentres*(1 + mix.nin + mix.nin); mix.covars = reshape(p(mark2 + 1:mark3), mix.ncentres, mix.nin); case 'full' mark3 = mix.ncentres*(1 + mix.nin + mix.nin*mix.nin); mix.covars = reshape(p(mark2 + 1:mark3), mix.nin, mix.nin, ... mix.ncentres);end ?? 快捷鍵說明
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