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yap-6.3/packages/CLPBN/examples/learning/prof_params.pfl

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/* Learn distribution for professor database. */
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:- use_module(library(pfl)).
:- use_module(library(clpbn/learning/em)).
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%:- clpbn:set_clpbn_flag(em_solver,gibbs).
%:- clpbn:set_clpbn_flag(em_solver,jt).
%:- clpbn:set_clpbn_flag(em_solver,hve).
:- clpbn:set_clpbn_flag(em_solver,ve).
%:- clpbn:set_clpbn_flag(em_solver,bp).
%:- clpbn:set_clpbn_flag(em_solver,bdd).
professor(p0).
professor(p1).
professor(p2).
professor(p3).
professor(p4).
professor(p5).
professor(p6).
professor(p7).
professor(p8).
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bayes abi(K)::[h,m,l] ; abi_table ; [professor(K)].
bayes pop(K)::[h,m,l], abi(K) ; pop_table ; [professor(K)].
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abi_table([0.3, 0.3, 0.4]).
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pop_table([0.3, 0.3, 0.4, 0.3, 0.3, 0.4, 0.3, 0.3, 0.4]).
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goal_list([
/*
abi(p0,h),
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abi(p1,m),
abi(p2,m),
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abi(p3,m),
*/
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abi(p4,l),
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pop(p5,h),
abi(p5,_),
abi(p6,_),
pop(p7,_)]).
timed_main :-
statistics(runtime, _),
main(Lik),
statistics(runtime, [T,_]),
format('Took ~d msec and Lik ~3f~n',[T,Lik]).
main(Lik) :-
goal_list(L),
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em(L,0.01,10,_,Lik).
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