52 lines
893 B
Prolog
52 lines
893 B
Prolog
% learn distribution for school database.
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:- ['../sprinkler.pfl'].
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:- use_module(library(clpbn/learning/em)).
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data(t,t,t,t).
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data(_,t,_,t).
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data(t,t,f,f).
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data(t,t,f,t).
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data(t,_,_,t).
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data(t,f,t,t).
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data(t,t,f,t).
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data(t,_,f,f).
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data(t,t,f,f).
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data(f,f,t,t).
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data(t,t,_,f).
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data(t,f,f,t).
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data(t,f,t,t).
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%:- set_pfl_flag(em_solver,gibbs).
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%:- set_pfl_flag(em_solver,jt).
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:- set_pfl_flag(em_solver,hve).
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%:- set_pfl_flag(em_solver,bp).
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:- set_pfl_flag(em_solver,ve).
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:- set_pfl_flag(em_solver,bdd).
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timed_main :-
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statistics(runtime, _),
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main(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(Lik) :-
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findall(X,scan_data(X),L),
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em(L,0.01,10,_,Lik).
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scan_data(I:[wet_grass(W),sprinkler(S),rain(R),cloudy(C)]) :-
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data(W, S, R, C),
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new_id(I).
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:- dynamic id/1.
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new_id(I) :-
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retract(id(I)),
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I1 is I+1,
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assert(id(I1)).
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id(0).
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