?? dbn_predict_bel.m
字號:
function engine = dbn_predict_bel(engine, lag)
% DBN_PREDICT_BEL Predict the belief state 'lag' steps into the future (bk_ff_hmm)
% engine = dbn_predict_bel(engine, lag)
% 'lag' defaults to 1
if nargin < 2, lag = 1; end
for d=1:lag
%newbel = engine.transmat' * engine.bel;
newbel = normalise(engine.transmat' * engine.bel);
hnodes = engine.hnodes;
bnet = bnet_from_engine(engine);
ns = bnet.node_sizes;
[marginals, marginalsT] = project_joint_onto_marginals(newbel, hnodes, ns);
newbel = combine_marginals_into_joint(marginalsT, hnodes, ns);
engine.bel_marginals = marginalsT;
engine.bel = newbel;
end
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