annotate toolboxes/FullBNT-1.0.7/bnt/CPDs/@discrete_CPD/CPD_to_lambda_msg.m @ 0:cc4b1211e677
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646 (e263d8a21543) added further path and more save "camirversion.m"
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Daniel Wolff |
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Fri, 19 Aug 2016 13:07:06 +0200 |
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1 function lam_msg = CPD_to_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence)
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2 % CPD_TO_LAMBDA_MSG Compute lambda message (discrete)
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3 % lam_msg = compute_lambda_msg(CPD, msg_type, n, ps, msg, p, evidence)
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4 % Pearl p183 eq 4.52
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5
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6 switch msg_type
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7 case 'd',
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8 T = prod_CPT_and_pi_msgs(CPD, n, ps, msg, p);
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9 mysize = length(msg{n}.lambda);
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10 lambda = dpot(n, mysize, msg{n}.lambda);
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11 T = multiply_by_pot(T, lambda);
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12 lam_msg = pot_to_marginal(marginalize_pot(T, p));
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13 lam_msg = lam_msg.T;
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14 case 'g',
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15 error('discrete_CPD can''t create Gaussian msgs')
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16 end
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