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% adapted from Hendrik Blockeel's ILP04 paper.
%
:- use_module(library(clpbn)).
cg(X,1,C):-
father(Y,X),
cg(Y,1,C1),cg(Y,2,C2),
parent_cpt(cg(X,1), C1, C2, C).
cg(X,2,C):-
mother(Y,X),
cg(Y,1,C1),cg(Y,2,C2),
parent_cpt(cg(X,2), C1, C2, C).
cg(f,X,C) :-
prior_cpt(cg(f,X),C).
cg(m,X,C) :-
prior_cpt(cg(m,X),C).
prior_cpt(CKEY, C) :-
{ C = CKEY with p([p,w], [0.5,0.5])}.
parent_cpt(CKEY, C1, C2, C) :-
{ C = CKEY with p([p,w], [ 1,0.5,0.5,0.0,
0.0,0.5,0.5, 1],[C1,C2])}.
father(f,s).
mother(m,s).
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