diff toolboxes/FullBNT-1.0.7/bnt/potentials/@upot/marginalize_pot.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/potentials/@upot/marginalize_pot.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,18 @@
+function smallpot = marginalize_pot(bigpot, onto, maximize)
+% MARGINALIZE_POT Marginalize a upot onto a smaller domain.
+% smallpot = marginalize_pot(bigpot, onto, maximize)
+%
+% The maximize argument is ignored
+
+numer = marg_table(bigpot.p .* bigpot.u, bigpot.domain, bigpot.sizes, onto);
+denom = marg_table(bigpot.p, bigpot.domain, bigpot.sizes, onto);
+
+p = denom;
+% replace 0s by 1s before dividing. This is valid since demon(i) = 0 => numer(i) = 0
+denom = denom + (denom == 0); 
+u = numer ./ denom;
+
+ns = zeros(1, max(bigpot.domain));
+ns(bigpot.domain) = bigpot.sizes;
+
+smallpot = upot(onto, ns(onto), p, u);