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

/* Learn distribution for professor database. */

:- use_module(library(pfl)).

:- use_module(library(clpbn/learning/em)).

%:- 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).

bayes abi(K)::[h,m,l] ; abi_table ; [professor(K)].

bayes pop(K)::[h,m,l], abi(K) ; pop_table ; [professor(K)].

abi_table([0.3, 0.3, 0.4]).

pop_table([0.3, 0.3, 0.4, 0.3, 0.3, 0.4, 0.3, 0.3, 0.4]).

goal_list([
/*
	abi(p0,h),
	abi(p1,m),
	abi(p2,m),
	abi(p3,m),
*/
	abi(p4,l),
	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),
	em(L,0.01,10,_,Lik).