function e = dempot(x, mix)%DEMPOT	Computes the negative log likelihood for a mixture model.%%	Description%	This function computes the negative log of 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.%%	See also%	DEMGPOT, DEMHMC1, DEMMET1%%	Copyright (c) Ian T Nabney (1996-2001)% Computes the potential (negative log likelihood)e = -log(gmmprob(mix, x));