Mercurial > hg > camir-aes2014
annotate toolboxes/FullBNT-1.0.7/bnt/inference/online/@smoother_engine/enter_evidence.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 |
rev | line source |
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wolffd@0 | 1 function [engine, LL] = enter_evidence(engine, ev) |
wolffd@0 | 2 % ENTER_EVIDENCE Call the offline smoother |
wolffd@0 | 3 % [engine, loglik] = enter_evidence(engine, evidence, ...) |
wolffd@0 | 4 % |
wolffd@0 | 5 % evidence{i,t} = [] if if X(i,t) is hidden, and otherwise contains its observed value (scalar or column vector) |
wolffd@0 | 6 % |
wolffd@0 | 7 |
wolffd@0 | 8 T = size(ev, 2); |
wolffd@0 | 9 f = cell(1,T); |
wolffd@0 | 10 b = cell(1,T); % b{t}.clpot{c} |
wolffd@0 | 11 ll = zeros(1,T); |
wolffd@0 | 12 [f{1}, ll(1)] = fwd1(engine.tbn_engine, ev(:,1), 1); |
wolffd@0 | 13 for t=2:T |
wolffd@0 | 14 [f{t}, ll(t)] = fwd(engine.tbn_engine, f{t-1}, ev(:,t), t); |
wolffd@0 | 15 end |
wolffd@0 | 16 LL = sum(ll); |
wolffd@0 | 17 b{T} = backT(engine.tbn_engine, f{T}, T); |
wolffd@0 | 18 for t=T-1:-1:1 |
wolffd@0 | 19 b{t} = back(engine.tbn_engine, b{t+1}, f{t}, t); |
wolffd@0 | 20 end |
wolffd@0 | 21 engine.b = b; |