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view toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_pi.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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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