?? log_prior.m
字號:
function L = log_prior(CPD)
% LOG_PRIOR Return log P(theta) for a tabular CPD
% L = log_prior(CPD)
switch CPD.prior_type
case 'none',
L = 0;
case 'dirichlet',
D = CPD.dirichlet(:);
L = sum(log(D + (D==0)));
case 'entropic',
% log-prior = log exp(-H(theta)) = sum_i theta_i log (theta_i)
fam_sz = CPD.sizes;
psz = prod(fam_sz(1:end-1));
ssz = fam_sz(end);
C = reshape(CPD.CPT, psz, ssz);
L = sum(sum(C .* log(C + (C==0))));
end
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -