Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/inference/static/@jtree_inf_engine/marginal_nodes.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/marginal_nodes.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,22 @@ +function marginal = marginal_nodes(engine, query, add_ev) +% MARGINAL_NODES Compute the marginal on the specified query nodes (jtree) +% marginal = marginal_nodes(engine, query, add_ev) +% +% 'query' must be a subset of some clique; an error will be raised if not. +% add_ev is an optional argument; if 1, we will "inflate" the marginal of observed nodes +% to their original size, adding 0s to the positions which contradict the evidence + +if nargin < 3, add_ev = 0; end + +c = clq_containing_nodes(engine, query); +if c == -1 + error(['no clique contains ' num2str(query)]); +end +marginal = pot_to_marginal(marginalize_pot(engine.clpot{c}, query, engine.maximize)); + +if add_ev + bnet = bnet_from_engine(engine); + %marginal = add_ev_to_dmarginal(marginal, engine.evidence, bnet.node_sizes); + marginal = add_evidence_to_gmarginal(marginal, engine.evidence, bnet.node_sizes, bnet.cnodes); +end +