Mercurial > hg > mauch-mirex-2010
view _FullBNT/BNT/learning/learn_params.m @ 9:4ea6619cb3f5 tip
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author | matthiasm |
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date | Fri, 11 Apr 2014 15:55:11 +0100 |
parents | b5b38998ef3b |
children |
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function bnet = learn_params(bnet, data) % LEARN_PARAMS Find the maximum likelihood params for a fully observed model % bnet = learn_params(bnet, data) % % data(i,m) is the value of node i in case m (can be a cell array) % % We set bnet.CPD{i} to its ML/MAP estimate. % % Currently we assume no param tying % AND THAT EACH DATA POINT IS A SCALAR - no longer assumed %if iscell(data) % data=cell2num(data); %end [n ncases] = size(data); for j=1:n e = bnet.equiv_class(j); assert(e==j); if adjustable_CPD(bnet.CPD{e}) fam = family(bnet.dag,j); %bnet.CPD{j} = learn_params(bnet.CPD{j}, data(fam,:)); bnet.CPD{j} = learn_params(bnet.CPD{j}, fam, data, bnet.node_sizes, bnet.cnodes); end end