Mercurial > hg > camir-aes2014

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
parents
children
rev   line source
wolffd@0 1 % Compare various inference engines on the following network (from Jensen (1996) p84 fig 4.17)
wolffd@0 2 % 1
wolffd@0 3 % / | \
wolffd@0 4 % 2 3 4
wolffd@0 5 % | | |
wolffd@0 6 % 5 6 7
wolffd@0 7 % \/ \/
wolffd@0 8 % 8 9
wolffd@0 9 % where all arcs point downwards
wolffd@0 10
wolffd@0 11 N = 9;
wolffd@0 12 dag = zeros(N,N);
wolffd@0 13 dag(1,2)=1; dag(1,3)=1; dag(1,4)=1;
wolffd@0 14 dag(2,5)=1; dag(3,6)=1; dag(4,7)=1;
wolffd@0 15 dag(5,8)=1; dag(6,8)=1; dag(6,9)=1; dag(7,9) = 1;
wolffd@0 16
wolffd@0 17 gauss = 1;
wolffd@0 18 if gauss
wolffd@0 19 ns = ones(1,N); % scalar nodes
wolffd@0 20 ns(1) = 2;
wolffd@0 21 ns(9) = 3;
wolffd@0 22 dnodes = [];
wolffd@0 23 else
wolffd@0 24 ns = 2*ones(1,N); % binary nodes
wolffd@0 25 dnodes = 1:N;
wolffd@0 26 end
wolffd@0 27
wolffd@0 28 bnet = mk_bnet(dag, ns, 'discrete', dnodes);
wolffd@0 29 % use random params
wolffd@0 30 for i=1:N
wolffd@0 31 if gauss
wolffd@0 32 bnet.CPD{i} = gaussian_CPD(bnet, i);
wolffd@0 33 else
wolffd@0 34 bnet.CPD{i} = tabular_CPD(bnet, i);
wolffd@0 35 end
wolffd@0 36 end
wolffd@0 37
wolffd@0 38 engines = {};
wolffd@0 39 engines{1} = jtree_inf_engine(bnet);
wolffd@0 40 engines{2} = stab_cond_gauss_inf_engine(bnet);
wolffd@0 41
wolffd@0 42 [err, time] = cmp_inference_static(bnet, engines);