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annotate toolboxes/FullBNT-1.0.7/bnt/CPDs/@gmux_CPD/sample_node.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function y = sample_node(CPD, pev)
wolffd@0 2 % SAMPLE_NODE Draw a random sample from P(Xi | x(pi_i), theta_i) (gmux)
wolffd@0 3 % y = sample_node(CPD, parent_evidence)
wolffd@0 4 %
wolffd@0 5 % parent_ev{i} is the value of the i'th parent
wolffd@0 6
wolffd@0 7 dpval = pev{CPD.dps};
wolffd@0 8 x = pev{CPD.cps(dpval)};
wolffd@0 9 y = gsamp(CPD.mean(:,dpval) + CPD.weights(:,:,dpval)*x(:), CPD.cov(:,:,dpval), 1);
wolffd@0 10 y = y(:);