Mercurial > hg > camir-aes2014
diff 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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/bnt/inference/online/@smoother_engine/enter_evidence.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,21 @@ +function [engine, LL] = enter_evidence(engine, ev) +% ENTER_EVIDENCE Call the offline smoother +% [engine, loglik] = enter_evidence(engine, evidence, ...) +% +% evidence{i,t} = [] if if X(i,t) is hidden, and otherwise contains its observed value (scalar or column vector) +% + +T = size(ev, 2); +f = cell(1,T); +b = cell(1,T); % b{t}.clpot{c} +ll = zeros(1,T); +[f{1}, ll(1)] = fwd1(engine.tbn_engine, ev(:,1), 1); +for t=2:T + [f{t}, ll(t)] = fwd(engine.tbn_engine, f{t-1}, ev(:,t), t); +end +LL = sum(ll); +b{T} = backT(engine.tbn_engine, f{T}, T); +for t=T-1:-1:1 + b{t} = back(engine.tbn_engine, b{t+1}, f{t}, t); +end +engine.b = b;