comparison toolboxes/FullBNT-1.0.7/netlab3.3/gmmprob.m @ 0:cc4b1211e677 tip

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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 consistent
+errstring = consist(mix, 'gmm', x);
+if ~isempty(errstring)
+  error(errstring);
+end
+
+% Compute activations
+a = gmmactiv(mix, x);
+
+% Form dot product with priors
+prob = a * (mix.priors)';