Mercurial > hg > camir-aes2014
comparison 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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comparison
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-1:000000000000 | 0:e9a9cd732c1e |
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1 function lam_msg = CPD_to_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence) | |
2 % CPD_TO_LAMBDA_MSG Compute lambda message (discrete) | |
3 % lam_msg = compute_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence) | |
4 % Pearl p183 eq 4.52 | |
5 | |
6 switch msg_type | |
7 case 'd', | |
8 T = prod_CPT_and_pi_msgs(CPD, n, ps, msg, p); | |
9 mysize = length(msg{n}.lambda); | |
10 lambda = dpot(n, mysize, msg{n}.lambda); | |
11 T = multiply_by_pot(T, lambda); | |
12 lam_msg = pot_to_marginal(marginalize_pot(T, p)); | |
13 lam_msg = lam_msg.T; | |
14 case 'g', | |
15 error('discrete_CPD can''t create Gaussian msgs') | |
16 end |