Mercurial > hg > camir-aes2014
view toolboxes/FullBNT-1.0.7/bnt/inference/static/@stab_cond_gauss_inf_engine/marginal_difclq_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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function marginal = marginal_difclq_nodes(engine, query_nodes) % MARGINAL_DIFCLQ_NODES get the marginal distribution of nodes which is not in a single clique % marginal = marginal_difclq_nodes(engine, query_nodes) keyboard num_clique = length(engine.cliques); B = engine.cliques_bitv; clqs_containnodes = []; for i=1:length(query_nodes) node = query_nodes(i); tnodes = find(all(B(:, node), 2)); clqs_containnodes = myunion(clqs_containnodes, tnodes); end % get all cliques contains query nodes % get the minimal sub tree in junction which contains these cliques and the node closest to the root of jtree [subtree, nroot_node] = min_subtree_conti_nodes(engine.jtree, engine.root, clqs_containnodes); if ~mysubset(query_nodes, engine.cliques{nroot_node}); % if query nodes is not all memers of the clique closest to the root clique performe push operation engine = push_tree(engine, subtree, query_nodes, nroot_node); end if ~(nroot_node == engine.root) % if the clique closest to the root clique is not the root clique we must direct combine the % potential with the potential stored in separator toward to root p = parents(engine.jtree, nroot_node); tpot = direct_combine_pots(engine.clpot{nroot_node}, engine.seppot{p, nroot_node}); else tpot = engine.clpot{nroot_node}; end pot = marginalize_pot(tpot, query_nodes); marginal = pot_to_marginal(pot); marginal.T = normalise(marginal.T); function engine = push_tree(engine, tree, query_nodes, inode) % PUSH_TREE recursive perform push opeartion on tree % engine = push_tree(engine, tree, query_nodes, inode) cs = children(tree, inode); for i = 1:length(cs) node = cs(i); push_tree(engine, tree, query_nodes, node); push_dom = myintersect(engine.cliques{node}, query_nodes); [engine, clqtoroot] = push(engine, node, push_dom); end