diff toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@bk_inf_engine/marginal_family.m @ 0:e9a9cd732c1e tip

first hg version after svn

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@bk_inf_engine/marginal_family.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,25 @@
+function m = marginal_family(engine, i, t)
+% MARGINAL_FAMILY Compute the marginal on the specified family (bk)
+% marginal = marginal_family(engine, i, t)
+
+% This is just like inf_engine/marginal_family, except when we call
+% marginal_nodes, we provide a 4th argument, to tell it's a family.
+
+if nargin < 3, t = 1; end
+
+bnet = bnet_from_engine(engine);
+if t==1
+  m = marginal_nodes(engine, family(bnet.dag, i), t, 1);
+else
+  ss = length(bnet.intra);
+  fam = family(bnet.dag, i+ss);
+  if any(fam<=ss)
+    % i has a parent in the preceeding slice
+    % Hence the lowest numbered slice containing the family is t-1
+    m = marginal_nodes(engine, fam, t-1, 1);
+  else
+    % The family all fits inside slice t
+    % Hence shift the indexes back to slice 1
+    m = marginal_nodes(engine, fam-ss, t, 1);
+  end
+end