comparison toolboxes/FullBNT-1.0.7/bnt/examples/static/SCG/scg3.m @ 0:e9a9cd732c1e tip

first hg version after svn

+% Compare various inference engines on the following network (from Jensen (1996) p84 fig 4.17)
+%    1
+%  / | \
+% 2  3  4
+% |  |  |
+% 5  6  7
+%  \/ \/
+%  8   9
+% where all arcs point downwards
+
+N = 9;
+dag = zeros(N,N);
+dag(1,2)=1; dag(1,3)=1; dag(1,4)=1;
+dag(2,5)=1; dag(3,6)=1; dag(4,7)=1;
+dag(5,8)=1; dag(6,8)=1; dag(6,9)=1; dag(7,9) = 1;
+
+gauss = 1;
+if gauss
+  ns = ones(1,N); % scalar nodes
+  ns(1) = 2;
+  ns(9) = 3;
+  dnodes = [];
+else
+  ns = 2*ones(1,N); % binary nodes
+  dnodes = 1:N;
+end
+
+bnet = mk_bnet(dag, ns, 'discrete', dnodes);
+% use random params
+for i=1:N
+  if gauss
+    bnet.CPD{i} = gaussian_CPD(bnet, i);
+  else
+    bnet.CPD{i} = tabular_CPD(bnet, i);
+  end
+end
+
+engines = {};
+engines{1} = jtree_inf_engine(bnet);
+engines{2} = stab_cond_gauss_inf_engine(bnet);
+
+[err, time] = cmp_inference_static(bnet, engines);