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annotate toolboxes/FullBNT-1.0.7/bnt/CPDs/@softmax_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, pvals)
wolffd@0 2 % SAMPLE_NODE Draw a random sample from P(Xi | x(pi_i), theta_i) (discrete)
wolffd@0 3 % y = sample_node(CPD, parent_evidence)
wolffd@0 4 %
wolffd@0 5 % parent_evidence{i} is the value of the i'th parent
wolffd@0 6
wolffd@0 7 n = length(pvals)+1;
wolffd@0 8 dom = 1:n;
wolffd@0 9 %evidence = cell(1,n);
wolffd@0 10 %evidence(1:n-1) = pvals(:)';
wolffd@0 11 evidence = pvals;
wolffd@0 12 evidence{end+1} = [];
wolffd@0 13 T = convert_to_table(CPD, dom, evidence);
wolffd@0 14 y = sample_discrete(T);