Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/bnt/CPDs/@noisyor_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/@noisyor_CPD/CPD_to_lambda_msg.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,19 @@ +function lam_msg = CPD_to_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence) +% CPD_TO_LAMBDA_MSG Compute lambda message (noisyor) +% lam_msg = CPD_to_lambda_msg(CPD, msg_type, n, ps, msg, p) +% Pearl p190 top eqn + +switch msg_type + case 'd', + l0 = msg{n}.lambda(1); + l1 = msg{n}.lambda(2); + Pi = sum_prod_CPD_and_pi_msgs(CPD, n, ps, msg, p); + i = find(p==ps); % p is n's i'th parent + q = CPD.inhibit(i); + lam_msg = zeros(2,1); + for u=0:1 + lam_msg(u+1) = l1 - (q^u)*(l1 - l0)*Pi; + end + case 'g', + error('noisyor_CPD can''t create Gaussian msgs') +end