Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@hmm_inf_engine/find_mpe.m @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@hmm_inf_engine/find_mpe.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,16 @@ +function mpe = find_mpe(engine, evidence) +% FIND_MPE Find the most probable explanation (Viterbi) +% mpe = enter_evidence(engine, evidence, ...) +% +% evidence{i,t} = [] if if X(i,t) is hidden, and otherwise contains its observed value (scalar or column vector) +% + +obslik = mk_hmm_obs_lik_matrix(engine, evidence); +path = viterbi_path(engine.startprob, engine.transprob, obslik); +bnet = bnet_from_engine(engine); +ns = bnet.node_sizes_slice; +ns(bnet.observed) = 1; +ass = ind2subv(ns, path); +mpe = num2cell(ass'); +mpe(bnet.observed,:) = evidence(bnet.observed,:); +