Mercurial > hg > camir-aes2014
view toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@bk_ff_hmm_inf_engine/dbn_update_bel.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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function [engine, loglik] = dbn_update_bel(engine, evidence) % DBN_UPDATE_BEL Update the belief state (bk_ff_hmm) % [engine, loglik] = dbn_update_bel(engine, evidence) % % evidence{i,1} contains the evidence on node i in slice t-1 % evidence{i,2} contains the evidence on node i in slice t oldbel = engine.bel; bnet = bnet_from_engine(engine); obslik = mk_hmm_obs_lik_vec(bnet, evidence); [newbel, lik] = normalise((engine.transmat' * oldbel) .* obslik); loglik = log(lik); hnodes = engine.hnodes; ns = bnet.node_sizes; [marginals, marginalsT] = project_joint_onto_marginals(newbel, hnodes, ns); newbel = combine_marginals_into_joint(marginalsT, hnodes, ns); engine.bel_marginals = marginalsT; engine.bel = newbel;