4
저는 프롤로그를 사용하여 분류 동물을위한 전문가 시스템을 만들고 있으며 GNU/Prolog 및 Debian GNU/Linux를 사용하고 있습니다.프롤로그에있는 작은 전문가 시스템
xpositive(symbol,symbol)
xnegative(symbol,symbol)
nondeterm animal_is(symbol)
nondeterm it_is(symbol)
ask(symbol,symbol,symbol)
remember(symbol,symbol,symbol)
positive(symbol,symbol)
negative(symbol,symbol)
clear_facts
run
animal_is(cheetah):-
it_is(mammal),
it_is(carnivore),
positive(has,tawny_color),
positive(has,dark_spots).
animal_is(tiger):-
it_is(mammal),
it_is(carnivore),
positive(has, tawny_color),
positive(has, black_stripes).
animal_is(giraffe):-
it_is(ungulate),
positive(has,long_neck),
positive(has,long_legs),
positive(has, dark_spots).
animal_is(zebra):-
it_is(ungulate),
positive(has,black_stripes).
animal_is(ostrich):-
it_is(bird),
negative(does,fly),
positive(has,long_neck),
positive(has,long_legs),
positive(has, black_and_white_color).
animal_is(penguin):-
it_is(bird),
negative(does,fly),
positive(does,swim),
positive(has,black_and_white_color).
animal_is(albatross):-
it_is(bird),positive(does,fly_well).
it_is(mammal):-
positive(has,hair).
it_is(mammal):-
positive(does,give_milk).
it_is(bird):-
positive(has,feathers).
it_is(bird):-
positive(does,fly),
positive(does,lay_eggs).
it_is(carnivore):-
positive(does,eat_meat).
it_is(carnivore):-
positive(has,pointed_teeth),
positive(has, claws),
positive(has,forward_eyes).
it_is(ungulate):-
it_is(mammal),
positive(has,hooves).
it_is(ungulate):-
it_is(mammal),
positive(does,chew_cud).
positive(X,Y):-
xpositive(X,Y),!.
positive(X,Y):-
not(xnegative(X,Y)),
ask(X,Y,yes).
negative(X,Y):-
xnegative(X,Y),!.
negative(X,Y):-
not(xpositive(X,Y)),
ask(X,Y,no).
ask(X,Y,yes):-
!,
write(X," it ",Y,'\n'),
readln(Reply),nl,
frontchar(Reply,'y',_),
remember(X,Y,yes).
ask(X,Y,no):-
!,
write(X," it ",Y,'\n'),
readln(Reply),nl,
frontchar(Reply,'n',_),
remember(X,Y,no).
remember(X,Y,yes):-
assertz(xpositive(X,Y)).
remember(X,Y,no):-
assertz(xnegative(X,Y)).
clear_facts:-
write("\n\nPlease press the space bar to exit\n"),
retractall(_,dbasedom),readchar(_).
run:-
animal_is(X),!,
write("\nYour animal may be a (an) ",X),
nl,nl,clear_facts.
run:-
write("\nUnable to determine what"),
write("your animal is.\n\n"),
clear_facts.
run.
이 프로그램에 문제가 있습니다. 나는 프로그램을 컴파일,하지만 오류 메시지가 얻을 :
GNU Prolog 1.3.0
By Daniel Diaz
Copyright (C) 1999-2007 Daniel Diaz
| ?- [system].
compiling /root/Dokumenty/Lab/Expert/system.pl for byte code...
/root/Dokumenty/Lab/Expert/system.pl:2:1: syntax error: . or operator expected after > expression
1 error(s)
compilation failed
내 문제를 해결하기 위해 노력하고있어,하지만 난 여전히 오류 메시지가 받고 있어요 :
xpositive(symbol,symbol).
xnegative(symbol,symbol).
nondeterm animal_is(symbol)
nondeterm it_is(symbol)
ask(symbol,symbol,symbol)
remember(symbol,symbol,symbol)
positive(symbol,symbol)
negative(symbol,symbol)
clear_facts
run
오류 메시지 :
| ?- [system].
compiling /root/Dokumenty/Lab/Expert/system.pl for byte code...
/root/Dokumenty/Lab/Expert/system.pl:4:11: syntax error: . or operator expected after expression
1 error(s)
compilation failed
은 (TurboProlog했다) 당신은 WinProlog에서 소스를 사용하는 사전
누락되었습니다. 당신 라인의 일부 이후에 (점)? –