?? gmmprob.m
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function prob = gmmprob(mix, x)%GMMPROB Computes the data probability for a Gaussian mixture model.%% Description% This function computes the unconditional data density P(X) for a% Gaussian mixture model. The data structure MIX defines the mixture% model, while the matrix X contains the data vectors. Each row of X% represents a single vector.%% See also% GMM, GMMPOST, GMMACTIV%% Copyright (c) Ian T Nabney (1996-2001)% Check that inputs are consistenterrstring = consist(mix, 'gmm', x);if ~isempty(errstring) error(errstring);end% Compute activationsa = gmmactiv(mix, x);% Form dot product with priorsprob = a * (mix.priors)';
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