function [post, a] = mdnpost(mixparams, t)%MDNPOST Computes the posterior probability for each MDN mixture component.%%	Description%	POST = MDNPOST(MIXPARAMS, T) computes the posterior probability%	P(J|T) of each data vector in T under the Gaussian mixture model%	represented by the corresponding entries in MIXPARAMS. Each row of T%	represents a single vector.%%	[POST, A] = MDNPOST(MIXPARAMS, T) also computes the activations A%	(i.e. the probability P(T|J) of the data conditioned on each%	component density) for a Gaussian mixture model.%%	See also%	MDNGRAD, MDNPROB%%	Copyright (c) Ian T Nabney (1996-2001)%	David J Evans (1998)[prob a] = mdnprob(mixparams, t);s = sum(prob, 2);% Set any zeros to one before dividings = s + (s==0);post = prob./(s*ones(1, mixparams.ncentres));