?? enter_evidence.m
字號:
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);endLL = 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);endengine.b = b;
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