comparison toolboxes/FullBNT-1.0.7/bnt/general/convert_dbn_CPDs_to_pots.m @ 0:e9a9cd732c1e tip

first hg version after svn

+function CPDpot = convert_dbn_CPDs_to_pots(bnet, evidence, pot_type, softCPDpot)
+% CONVERT_DBN_CPDS_TO_POTS Convert CPDs of (possibly instantiated) DBN nodes to potentials
+% CPDpot = convert_dbn_CPDs_to_pots(bnet, evidence, pot_type, softCPDpot)
+%
+% CPDpot{n,t} is a potential containing P(n,t|pa(n,t), ev)
+% softCPDpot{n,t} is a potential containing P(n,t|pa(n,t), ev) insted of using n's CPD
+
+[ss T] = size(evidence);
+
+if nargin < 4, softCPDpot = cell(ss,T); end
+CPDpot = softCPDpot;
+
+% Convert CPDs of instantiated nodes to potential form
+t = 1;
+for n=1:ss
+  fam = family(bnet.dag, n);
+  e = bnet.equiv_class(n, 1);
+  if isempty(softCPDpot{n,t})
+    CPDpot{n,t} = convert_to_pot(bnet.CPD{e}, pot_type, fam(:), evidence(:,1));
+  end
+end
+for n=1:ss
+  fam = family(bnet.dag, n, 2);
+  e = bnet.equiv_class(n, 2);
+  for t=2:T
+    if isempty(softCPDpot{n,t})
+      CPDpot{n,t} = convert_to_pot(bnet.CPD{e}, pot_type, fam(:), evidence(:,t-1:t));
+    end
+  end       
+end