Mercurial > hg > camir-aes2014
comparison 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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-1:000000000000 | 0:e9a9cd732c1e |
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1 function marginal = marginal_nodes(engine, query, add_ev) | |
2 % MARGINAL_NODES Compute the marginal on the specified query nodes (jtree) | |
3 % marginal = marginal_nodes(engine, query, add_ev) | |
4 % | |
5 % 'query' must be a subset of some clique; an error will be raised if not. | |
6 % add_ev is an optional argument; if 1, we will "inflate" the marginal of observed nodes | |
7 % to their original size, adding 0s to the positions which contradict the evidence | |
8 | |
9 if nargin < 3, add_ev = 0; end | |
10 | |
11 c = clq_containing_nodes(engine, query); | |
12 if c == -1 | |
13 error(['no clique contains ' num2str(query)]); | |
14 end | |
15 marginal = pot_to_marginal(marginalize_pot(engine.clpot{c}, query, engine.maximize)); | |
16 | |
17 if add_ev | |
18 bnet = bnet_from_engine(engine); | |
19 %marginal = add_ev_to_dmarginal(marginal, engine.evidence, bnet.node_sizes); | |
20 marginal = add_evidence_to_gmarginal(marginal, engine.evidence, bnet.node_sizes, bnet.cnodes); | |
21 end | |
22 |