?? belprop_polytree_discrete.m
字號:
% Make the following polytree, where all arcs point down% 1 2% \ /% 3% / \% 4 5N = 5;dag = zeros(N,N);dag(1,3) = 1;dag(2,3) = 1;dag(3, [4 5]) = 1;ns = 2*ones(1,N); % binary nodesonodes = [1 5];bnet = mk_bnet(dag, ns, 'observed', onodes);if 0seed = 0;rand('state', seed);randn('state', seed);endfor i=1:N %bnet.CPD{i} = tabular_CPD(bnet, i); bnet.CPD{i} = noisyor_CPD(bnet, i);endengine = {};engine{end+1} = jtree_inf_engine(bnet);engine{end+1} = pearl_inf_engine(bnet, 'protocol', 'tree');engine{end+1} = pearl_inf_engine(bnet, 'protocol', 'parallel');[err, time] = cmp_inference_static(bnet, engine, 'maximize', 0, 'check_ll', 1);
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