comparison toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@hmm_inf_engine/marginal_nodes.m @ 0:e9a9cd732c1e tip

first hg version after svn

+function marginal = marginal_nodes(engine, nodes, t, add_ev)
+% MARGINAL_NODES Compute the marginal on the specified query nodes (hmm)
+% marginal = marginal_nodes(engine, nodes, t, add_ev)
+%
+% 'nodes' must be a single node.
+% t is the time slice.
+
+if nargin < 3, t = 1; end
+if nargin < 4, add_ev = 0; end
+
+assert(length(nodes)==1)
+ss = engine.slice_size;
+
+i = nodes(1);
+bigT = engine.one_slice_marginal(:,t);
+dom = i + (t-1)*ss;
+
+ns = engine.eff_node_sizes(:);
+bigdom = 1:ss;
+marginal.T = marg_table(bigT, bigdom + (t-1)*ss, ns(bigdom), dom, engine.maximize);
+
+marginal.domain = dom;
+marginal.mu = [];
+marginal.Sigma = [];
+
+if add_ev
+  marginal = add_ev_to_dmarginal(marginal, engine.evidence, engine.node_sizes);
+end    
+