Mercurial > hg > camir-ismir2012

diff toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_pi.m @ 0:cc4b1211e677 tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
initial commit to HG from Changeset: 646 (e263d8a21543) added further path and more save "camirversion.m"
author Daniel Wolff
date Fri, 19 Aug 2016 13:07:06 +0200
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_pi.m	Fri Aug 19 13:07:06 2016 +0200
@@ -0,0 +1,13 @@
+function pi = CPD_to_pi(CPD, msg_type, n, ps, msg, evidence)
+% COMPUTE_PI Compute pi vector (discrete) 
+% pi = compute_pi(CPD, msg_type, n, ps, msg, evidence)
+% Pearl p183 eq 4.51
+
+switch msg_type
+  case 'd',
+   T = prod_CPT_and_pi_msgs(CPD, n, ps, msg);
+   pi = pot_to_marginal(marginalize_pot(T, n));
+   pi = pi.T(:);                   
+ case 'g', 
+  error('can only convert discrete CPD to Gaussian pi if observed')
+end