diff toolboxes/FullBNT-1.0.7/bnt/CPDs/@tabular_CPD/learn_params.m @ 0:e9a9cd732c1e tip

first hg version after svn

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/FullBNT-1.0.7/bnt/CPDs/@tabular_CPD/learn_params.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,17 @@
+function CPD = learn_params(CPD, fam, data, ns, cnodes)
+%function CPD = learn_params(CPD, local_data)
+% LEARN_PARAMS Compute the ML/MAP estimate of the params of a tabular CPD given complete data
+% CPD = learn_params(CPD, local_data)
+%
+% local_data(i,m) is the value of i'th family member in case m (can be cell array).
+
+local_data = data(fam, :); 
+if iscell(local_data)
+  local_data = cell2num(local_data);
+end
+counts = compute_counts(local_data, CPD.sizes);
+switch CPD.prior_type
+ case 'none', CPD.CPT = mk_stochastic(counts); 
+ case 'dirichlet', CPD.CPT = mk_stochastic(counts + CPD.dirichlet); 
+ otherwise, error(['unrecognized prior ' CPD.prior_type])
+end