comparison toolboxes/FullBNT-1.0.7/bnt/CPDs/@tree_CPD/set_fields.m @ 0:cc4b1211e677 tip

initial commit to HG from
Changeset:
646 (e263d8a21543) added further path and more save "camirversion.m"

+function CPD = set_fields(CPD, varargin)
+% SET_PARAMS Set the parameters (fields) for a tabular_CPD object
+% CPD = set_params(CPD, name/value pairs)
+%
+% The following optional arguments can be specified in the form of name/value pairs:
+%
+% CPT     - the CPT
+% prior   - the prior
+% clamped - 1 means don't adjust during EM
+%
+% e.g., CPD = set_params(CPD, 'CPT', 'rnd')
+
+args = varargin;
+nargs = length(args);
+for i=1:2:nargs
+  switch args{i},
+   case 'CPT', 
+    if ischar(args{i+1})
+      switch args{i+1}
+       case 'unif', CPD.CPT = mk_stochastic(myones(CPD.sizes));
+       case 'rnd',  CPD.CPT = mk_stochastic(myrand(CPD.sizes));
+       otherwise,   error(['invalid type ' args{i+1}]);       
+      end
+    elseif isscalarBNT(args{i+1})
+      p = args{i+1};
+      k = CPD.sizes(end);
+      % Bug fix by Hervé BOUTROUILLE 10/1/01
+      CPD.CPT = myreshape(sample_dirichlet(p*ones(1,k), prod(CPD.sizes(1:end-1)), CPD.sizes));   
+      %CPD.CPT = myreshape(sample_dirichlet(p*ones(1,k), prod(CPD.sizes(1:end-1))), CPD.sizes);
+    else
+      CPD.CPT = myreshape(args{i+1}, CPD.sizes);
+    end
+   
+   case 'prior',       
+    if ischar(args{i+1}) & strcmp(args{i+1}, 'unif')
+      CPD.prior = myones(CPD.sizes);
+    elseif isscalarBNT(args{i+1})
+      CPD.prior = args{i+1} * normalise(myones(CPD.sizes));
+    else
+      CPD.prior = myreshape(args{i+1}, CPD.sizes);
+    end
+    
+   %case 'clamped',      CPD.clamped = strcmp(args{i+1}, 'yes');
+   %case 'clamped',      CPD = set_clamped(CPD, strcmp(args{i+1}, 'yes'));
+   case 'clamped',      CPD = set_clamped(CPD, args{i+1});
+   
+   otherwise,  
+    %error(['invalid argument name ' args{i}]);       
+  end
+end
+
+