Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/inference/static/@jtree_inf_engine/Old/distribute_evidence.m @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/bnt/inference/static/@jtree_inf_engine/Old/distribute_evidence.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,26 @@ +function engine = distribute_evidence(engine, root) + +if isempty(engine.preorder{root}) + % this is the first time we have distributed from this root + % memoize the order + [jtree, preorder, postorder] = mk_rooted_tree(engine.jtree, root); + preorder_children = cell(1,length(preorder)); + for n=preorder + preorder_children{n} = children(jtree, n); + end + engine.preorder{root} = preorder; + engine.preorder_children{root} = preorder_children; +else + preorder = engine.preorder{root}; + preorder_children = engine.preorder_children{root}; +end + + +% distribute from root (node to children) +for n=preorder(:)' + for c=preorder_children{n}(:)' + engine.clpot{c} = divide_by_pot(engine.clpot{c}, engine.seppot{n,c}); + engine.seppot{n,c} = marginalize_pot(engine.clpot{n}, engine.separator{n,c}, engine.maximize); + engine.clpot{c} = multiply_by_pot(engine.clpot{c}, engine.seppot{n,c}); + end +end