Mercurial > hg > camir-aes2014
comparison 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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-1:000000000000 | 0:e9a9cd732c1e |
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1 function obslik = mk_hmm_obs_lik_vec1(bnet, evidence) | |
2 % MK_HMM_OBS_LIK_VEC1 Make the observation likelihood vector for the first slice | |
3 % obslik = mk_hmm_obs_lik_vec1(engine, evidence) | |
4 % | |
5 % obslik(i) = Pr(y(1) | X(1)=i) | |
6 % evidence{i} contains the evidence on node i in slice 1 | |
7 | |
8 ns = bnet.node_sizes; | |
9 ss = length(ns); | |
10 onodes = find(~isemptycell(evidence(:))); | |
11 hnodes = find(isemptycell(evidence(:))); | |
12 ens = ns; | |
13 ens(onodes) = 1; | |
14 Q = prod(ens(hnodes)); | |
15 obslik = zeros(1,Q); | |
16 dom = (1:ss); | |
17 bigpot = dpot(dom, ens(dom)); | |
18 for i=onodes(:)' | |
19 e = bnet.equiv_class(i,1); | |
20 fam = family(bnet.dag, i); | |
21 pot = convert_to_pot(bnet.CPD{e}, 'd', fam(:), evidence); | |
22 bigpot = multiply_by_pot(bigpot, pot); | |
23 end | |
24 m = pot_to_marginal(bigpot); | |
25 obslik = m.T(:); |