Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/inference/dynamic/@bk_ff_hmm_inf_engine/private/mk_hmm_obs_lik_vec1.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/@bk_ff_hmm_inf_engine/private/mk_hmm_obs_lik_vec1.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,25 @@ +function obslik = mk_hmm_obs_lik_vec1(bnet, evidence) +% MK_HMM_OBS_LIK_VEC1 Make the observation likelihood vector for the first slice +% obslik = mk_hmm_obs_lik_vec1(engine, evidence) +% +% obslik(i) = Pr(y(1) | X(1)=i) +% evidence{i} contains the evidence on node i in slice 1 + +ns = bnet.node_sizes; +ss = length(ns); +onodes = find(~isemptycell(evidence(:))); +hnodes = find(isemptycell(evidence(:))); +ens = ns; +ens(onodes) = 1; +Q = prod(ens(hnodes)); +obslik = zeros(1,Q); +dom = (1:ss); +bigpot = dpot(dom, ens(dom)); +for i=onodes(:)' + e = bnet.equiv_class(i,1); + fam = family(bnet.dag, i); + pot = convert_to_pot(bnet.CPD{e}, 'd', fam(:), evidence); + bigpot = multiply_by_pot(bigpot, pot); +end +m = pot_to_marginal(bigpot); +obslik = m.T(:);