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Diffstat (limited to 'sourcecodes/bnt-master/BNT/examples/static/discrete2.m')
| -rw-r--r-- | sourcecodes/bnt-master/BNT/examples/static/discrete2.m | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/BNT/examples/static/discrete2.m b/sourcecodes/bnt-master/BNT/examples/static/discrete2.m new file mode 100644 index 00000000..c7ca5f41 --- /dev/null +++ b/sourcecodes/bnt-master/BNT/examples/static/discrete2.m @@ -0,0 +1,46 @@ +% 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 +seed = 0; +rand('state', seed); +randn('state', seed); + +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; + +dnodes = 1:N; +false = 1; true = 2; +ns = 2*ones(1,N); % binary nodes + +onodes = [2 4]; +bnet = mk_bnet(dag, ns, 'observed', onodes); +% use random params +for i=1:N + bnet.CPD{i} = tabular_CPD(bnet, i); +end + +%USEC = exist('@jtree_C_inf_engine/collect_evidence','file'); +query = [3]; +engine = {}; +engine{end+1} = jtree_inf_engine(bnet); +engine{end+1} = jtree_sparse_inf_engine(bnet); +%engine{end+1} = jtree_ndx_inf_engine(bnet, 'ndx_type', 'SD'); +%engine{end+1} = jtree_ndx_inf_engine(bnet, 'ndx_type', 'B'); +%engine{end+1} = jtree_ndx_inf_engine(bnet, 'ndx_type', 'D'); +%if USEC, engine{end+1} = jtree_C_inf_engine(bnet); end +%engine{end+1} = var_elim_inf_engine(bnet); +%engine{end+1} = enumerative_inf_engine(bnet); +%engine{end+1} = jtree_onepass_inf_engine(bnet, query, onodes); + +maximize = 0; % jtree_ndx crashes on max-prop +[err, time] = cmp_inference_static(bnet, engine, 'maximize', maximize); + |
