comparison toolboxes/FullBNT-1.0.7/bnt/inference/online/@smoother_engine/enter_evidence.m @ 0:e9a9cd732c1e tip

first hg version after svn

+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;