Mercurial > hg > camir-aes2014
comparison toolboxes/FullBNT-1.0.7/bnt/inference/online/@jtree_2TBN_inf_engine/back1.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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children |
comparison
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-1:000000000000 | 0:e9a9cd732c1e |
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1 function b = back1(engine, bfuture, f, t) | |
2 | |
3 if t ~= 1 | |
4 error('mixed up time stamps') | |
5 end | |
6 bnet = bnet_from_engine(engine); | |
7 ss = bnet.nnodes_per_slice; | |
8 | |
9 int = engine.interface; | |
10 D = engine.in_clq; % from J2 | |
11 C = engine.int_clq1; % from J1 | |
12 phiD = marginalize_pot(bfuture.clpot{D}, int, engine.maximize); | |
13 phiC = marginalize_pot(f.clpot{C}, int, engine.maximize); | |
14 ratio = divide_by_pot(phiD, phiC); | |
15 f.clpot{C} = multiply_by_pot(f.clpot{C}, ratio); | |
16 | |
17 [b.clpot, seppot] = distribute_evidence(engine.jtree_engine1, f.clpot, f.seppot); | |
18 for c=1:length(b.clpot) | |
19 [b.clpot{c}, ll(c)] = normalize_pot(b.clpot{c}); | |
20 end | |
21 b.t = t; |