Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_lambda_msg.m @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_lambda_msg.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,16 @@ +function lam_msg = CPD_to_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence) +% CPD_TO_LAMBDA_MSG Compute lambda message (discrete) +% lam_msg = compute_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence) +% Pearl p183 eq 4.52 + +switch msg_type + case 'd', + T = prod_CPT_and_pi_msgs(CPD, n, ps, msg, p); + mysize = length(msg{n}.lambda); + lambda = dpot(n, mysize, msg{n}.lambda); + T = multiply_by_pot(T, lambda); + lam_msg = pot_to_marginal(marginalize_pot(T, p)); + lam_msg = lam_msg.T; + case 'g', + error('discrete_CPD can''t create Gaussian msgs') +end