63 lines
1.3 KiB
Prolog
63 lines
1.3 KiB
Prolog
/* Learn distribution for school database. */
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/* We do not consider aggregates yet. */
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:- [pos:train].
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:- ['../../examples/School/sch32'].
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:- use_module(library(clpbn/learning/em)).
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%:- clpbn:set_clpbn_flag(em_solver,gibbs).
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%:- clpbn:set_clpbn_flag(em_solver,jt).
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:- clpbn:set_clpbn_flag(em_solver,ve).
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%:- clpbn:set_clpbn_flag(em_solver,bp).
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timed_main :-
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statistics(runtime, _),
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findall(X,goal(X),L),
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em(L,0.01,10,_,Lik),
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statistics(runtime, [T,_]),
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format('Took ~d msec and Lik ~3f~n',[T,Lik]).
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main :-
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findall(X,goal(X),L),
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em(L,0.001,10,CPTs,Lik),
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writeln(Lik:CPTs).
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%
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% Change to 0.0, 0.1, 0.2 to make things simpler/harder
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%
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missing(0.2).
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goal(professor_ability(P,V)) :-
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pos:professor_ability(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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goal(professor_popularity(P,V)) :-
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pos:professor_popularity(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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goal(registration_grade(P,V)) :-
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pos:registration_grade(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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goal(student_intelligence(P,V)) :-
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pos:student_intelligence(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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goal(course_difficulty(P,V)) :-
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pos:course_difficulty(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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goal(registration_satisfaction(P,V)) :-
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pos:registration_satisfaction(P,V1),
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missing(X),
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( random > X -> V = V1 ; true).
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