Пролог, как использовать элемент списка как переменную в предикате - PullRequest
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Пролог, как использовать элемент списка как переменную в предикате

1 голос
/ 30 апреля 2020

Добрый день! Я хотел бы спросить, как можно использовать элемент списка в качестве переменной в предикате.

Это код, который я смог сделать до сих пор: 

case(boeing, [f4, f6, f12, f14, f21, f1, f10]).

go(Case) :-
    case(Case, [H|T]),
    getf124(Case, H).

getf124(Case,factorsSoFar) :-
member(f3, factorsSoFar),
write(['the defendent is the owner of secret']),
nl, getf123(Case, [f124|factorsSoFar]).

getf124(Case,factorsSoFar):-
write(['Accepted that the defendent is not the owner of secret']),
nl, getf123(Case,factorsSoFar).

Когда я удаляю getf124 (Case, H), я могу выполнить запрос 

?- go(boeing).
true

Однако это только означает, что я просто проверяю, содержит ли мой запрос слово, указанное в базе правил. (Что в данном случае является Боингом)

Моя цель состоит в том, чтобы использовать предикат списка [H | T] в предикате 

getf124(Case, factorsSoFar)

Так что, если обнаружен f4, то его предполагаемый вывести 

Accepted that the defendent is not the owner of secret

и так далее для каждого элемента в списке. (Хвост)

** РЕДАКТИРОВАТЬ: Добавлен весь код для справки **

case(boeing, [f4, f6, f12, f14, f21, f1, f10]).

go(Case) :-
    case(Case, [H|T]),
    getf124(Case, H).

% determine acceptibilty of
% F124, Defendent Ownership Rights
getf124(Case,F) :-
member(f3, F),
write(['the defendent is the owner of secret']), nl, 
getf123(Case, [f124|F]).

getf124(Case,factorsSoFar):-
write(['Accepted that the defendent is not the owner of secret']),
nl, getf123(Case,factorsSoFar).

% determine acceptibilty of
% F123, Maintaining Secrecy via Outsiders
getf123(Case,factorsSoFar) :-
member(f12, factorsSoFar), 
member(f10,factorsSoFar),!,
write(['Efforts made vis a vis Outsiders']),
nl, getf122(Case, [f123|factorsSoFar]).

getf123(Case,factorsSoFar):-
write(['Accepted that Efforts not made vis a vis Outsiders']),
nl, getf122(Case,factorsSoFar).

% determine acceptibilty of
% F122, Maintaining Secrecy via Defendent
getf122(Case,factorsSoFar) :-
member(f4, factorsSoFar), 
member(f1,factorsSoFar),!,
write(['Efforts made a vis a vis Defendent']),
nl, getf121(Case, [f122|factorsSoFar]).

getf122(Case,factorsSoFar):-
write(['Accepted that Efforts not made vis a vis Defendent']),
nl, getf121(Case,factorsSoFar).


% determine acceptibilty of
% F121, Confidentiality Agreement
getf121(Case,factorsSoFar):-
member(f23,factorsSoFar), 
member(f4,factorsSoFar),!,
write(['There was no Confidentiality Agreement']),
nl, getf115(Case,factorsSoFar).

getf121(Case,factorsSoFar):-
write(['Accepted that there was a Confidentiality Agreement']),
nl, getf115(Case,[f121|factorsSoFar]).

% determine acceptibilty of
% F115, Notice of Confidentiality
getf115(Case,factorsSoFar):-
member(f23,factorsSoFar),
write(['defendent was not on notice of Confidentiality']),
nl, getf114(Case,factorsSoFar).

getf115(Case,factorsSoFar):-
member(f21,factorsSoFar),
write(['defendent was on notice of Confidentiality']),
nl, getf114(Case,[f115|factorsSoFar]).

getf115(Case,factorsSoFar):-
member(f14,factorsSoFar),
write(['defendent was on notice of Confidentiality']),
nl, getf114(Case,[f115|factorsSoFar]).

getf115(Case,factorsSoFar):-
member(f5,factorsSoFar),
write(['defendent was not on notice of Confidentiality']),
nl, getf114(Case,factorsSoFar).

getf115(Case,factorsSoFar):-
member(f4,factorsSoFar),
write(['defendent was on notice of Confidentiality']),
nl, getf114(Case,[f115|factorsSoFar]).

getf115(Case,factorsSoFar):-
member(f13,factorsSoFar),
write(['defendent was on notice of Confidentiality']),
nl, getf114(Case,[f115|factorsSoFar]).

getf115(Case,factorsSoFar):-
write(['Accepted that defendent was not on notice of Confidentiality']),
nl, getf114(Case,factorsSoFar).

% determine acceptibilty of
% F114, Confidentiality relationship

getf114(Case,factorsSoFar):-
member(f115,factorsSoFar);
member(f121, factorsSoFar),
write(['There was a Confidential Relationship']),
nl, getf112(Case, [f114|factorsSoFar]).

getf114(Case,factorsSoFar):-
write(['Accepted that there was no Confidentiality Relationship']),
nl, getf112(Case,factorsSoFar).

% determine acceptability of
% F112, Information used 
getf112(Case,factorsSoFar):- 
member(f18,factorsSoFar), 
write(['The information was used']),
nl, getf111(Case,[f112|factorsSoFar]).

getf112(Case,factorsSoFar):- 
member(f8,factorsSoFar), 
write(['the information was used']),
nl, getf111(Case,[f112|factorsSoFar]).

getf112(Case,factorsSoFar):- 
member(f7,factorsSoFar), 
write(['the information was used']),
nl, getf111(Case,[f112|factorsSoFar]).

getf112(Case,factorsSoFar):- 
member(f17,factorsSoFar), 
write(['the information was not used']), 
nl, getf111(Case,factorsSoFar).

getf112(Case,factorsSoFar):- 
write(['accepted that the information was used']),
nl, getf111(Case,[f112|factorsSoFar]).

% determine acceptibilty of
% F111, Questionable means
getf111(Case,factorsSoFar):-
member(f25,factorsSoFar);
write(['Questionable means not were used']),
nl, getf108(Case,factorsSoFar).

getf111(Case,factorsSoFar):-
member(f17,factorsSoFar);
write(['Questionable means not were used']),
nl, getf108(Case,factorsSoFar).

getf111(Case,factorsSoFar):-
member(f22,factorsSoFar);
write(['Questionable means were used']),
nl, getf108(Case,[f111|factorsSoFar]).

getf111(Case,factorsSoFar):-
member(f26,factorsSoFar);
write(['Questionable means were used']),
nl, getf108(Case,[f111|factorsSoFar]).

getf111(Case,factorsSoFar):-
member(f14,factorsSoFar);
write(['Questionable means were used']),
nl, getf108(Case,[f111|factorsSoFar]).

getf111(Case,factorsSoFar):-
member(f2,factorsSoFar);
write(['Questionable means were used']),
nl, getf108(Case,[f111|factorsSoFar]).

getf111(Case,factorsSoFar):-
member(f1,factorsSoFar);
write(['Questionable means not were used']),
nl, getf108(Case,factorsSoFar).

getf111(Case,factorsSoFar):-
write(['Accepted that questionable means not were used']),
nl, getf108(Case,factorsSoFar).

% determine acceptibilty of
% F108, Information available elsewhere
getf108(Case,factorsSoFar):-
member(f16,factorsSoFar);
member(f24,factorsSoFar),
write(['the Information was available elsewhere']),
nl, getf106(Case, [f108|factorsSoFar]).

getf108(Case,factorsSoFar):-
write(['Accepted that the Information was not available elsewhere']),
nl, getf106(Case,factorsSoFar).

% determine acceptibilty of
% F106, Information Known
getf106(Case,factorsSoFar):-
member(f20,factorsSoFar),
write(['The information is known']),
nl, getf105(Case, [f106|factorsSoFar]).

getf106(Case,factorsSoFar):-
member(f27,factorsSoFar),
member(f15,factorsSoFar), !,
write(['The information is known']),
nl, getf105(Case, [f106|factorsSoFar]).

getf106(Case,factorsSoFar):-
member(f27,factorsSoFar),
member(f123,factorsSoFar),!,
write(['The information is known']),
nl, getf105(Case, [f106|factorsSoFar]).

getf106(Case,factorsSoFar):-
write(['Accepted that the information is not known']),
nl, getf105(Case, [f106|factorsSoFar]).

% determine acceptibilty of 
% F105, Information Known Or available
getf105(Case,factorsSoFar):-
member(f106, factorsSoFar);
member(f108, factorsSoFar),
write(['The information was known or available']),
nl, getf104(Case, [f105|factorsSoFar]).

getf105(Case,factorsSoFar):-
write(['Accepted that the information was neither known or available']),
nl, getf104(Case, factorsSoFar).

% determine acceptibilty of
% F104, Information Valuable
getf104(Case,factorsSoFar):-
member(f8,factorsSoFar),
write(['the information was Valuable']),
nl, getf120(Case, [f104|factorsSoFar]).

getf104(Case,factorsSoFar):-
member(f15,factorsSoFar),
write(['the information was Valuable']),
nl, getf120(Case, [f104|factorsSoFar]).

getf104(Case,factorsSoFar):-
member(f105,factorsSoFar),
write(['the information was not Valuable']),
nl, getf120(Case,factorsSoFar).

getf104(Case,factorsSoFar):-
write(['Accepted that the information was Valuable']),
nl, getf120(Case, [f104|factorsSoFar]).


% determine acceptibilty of
% F120, Information legitimately obtained
getf120(Case,factorsSoFar):-
member(f111,factorsSoFar), 
member(f105,factorsSoFar),!,
write(['the information was not legitimately obtained']),
nl, getf110(Case,factorsSoFar).

getf120(Case,factorsSoFar):-
write(['Accepted that the information was legitimately obtained']),
nl, getf110(Case,[f120|factorsSoFar]).

% determine acceptibilty of
% F110, Improper Means 
getf110(Case,factorsSoFar):-
member(f120, factorsSoFar), 
member(f111,factorsSoFar),!,
write(['Improper means were not used']),
nl, getf102(Case,factorsSoFar).

getf110(Case,factorsSoFar):-
write(['Accepted that Improper means were used']),
nl, getf102(Case, [f110|factorsSoFar]).

% determine acceptibilty of
% F102, Efforts to maintain secrecy
getf102(Case,factorsSoFar):-
member(f19,factorsSoFar),
write(['Efforts were not taken to maintain secrecy']),
nl, getf203(Case,factorsSoFar).

getf102(Case,factorsSoFar):-
member(f23,factorsSoFar),
write(['Efforts were not taken to maintain secrecy']),
nl, getf203(Case,factorsSoFar).

getf102(Case,factorsSoFar):-
member(f27,factorsSoFar),
member(f123,factorsSoFar),!,
write(['Efforts were not taken to maintain secrecy']),
nl, getf203(Case,factorsSoFar).

getf102(Case,factorsSoFar):-
member(f6,factorsSoFar),
write(['Efforts were taken to maintain secrecy']),
nl, getf203(Case, [f102|factorsSoFar]).

getf102(Case,factorsSoFar):-
member(f122,factorsSoFar),
write(['Efforts were taken to maintain secrecy']),
nl, getf203(Case, [f102|factorsSoFar]).

getf102(Case,factorsSoFar):-
member(f123,factorsSoFar),
write(['Efforts were taken to maintain secrecy']),
nl, getf203(Case, [f102|factorsSoFar]).

getf102(Case,factorsSoFar):-
write(['Accepted that efforts were not taken to maintain secrecy']),
nl, getf203(Case,factorsSoFar).

% determine acceptibilty of 
% F203, Information Trade secret

getf203(Case,factorsSoFar):-
member(f102,factorsSoFar),
member(f104,factorsSoFar),
write(['Information was a trade secret']),
nl, getf201(Case,[f203|factorsSoFar]).

getf203(Case,factorsSoFar):-
write(['Accepted that Information was not a trade secret']),
nl, getf201(Case,factorsSoFar).

% determine acceptibilty of
% F201, Information misappropriation

getf201(Case,factorsSoFar):-
member(f114,factorsSoFar),
member(f112,factorsSoFar),
write(['Information was misappropriated']),
nl, getf200(Case,[f201|factorsSoFar]).

getf201(Case,factorsSoFar):-
member(f110,factorsSoFar),
write(['Information was misappropriated']),
nl, getf200(Case,[f201|factorsSoFar]).

getf201(Case,factorsSoFar):-
write(['Accepted that Information was not misappropriated']),
nl, getf200(Case,factorsSoFar).


% determine acceptibilty of
% F200, Trade secret misappropriation
getf200(Case,factorsSoFar):-
member([f203,factorsSoFar]),
member(f201,factorsSoFar),
member(f124,factorsSoFar),!,
write(['the trade secret was misappropriated']),
nl, write(['find for plaintiff']).

getf200(Case,factorsSoFar):-
write(['the trade secret was not misappropriated']),
nl, write(['find for defendent']).

РЕДАКТИРОВАТЬ # 2: OMG Я применил указанные изменения (IDK, почему я не сделал ' Если не использовать правильную переменную, переменные должны начинаться с заглавных букв, какой облом facepalm ) 

?- go(spaceAero).
[Accepted that the defendent is not the owner of secret]
[Accepted that Efforts not made vis a vis Outsiders]
[Accepted that Efforts not made vis a vis Defendent]
[Accepted that there was a Confidentiality Agreement]
[Accepted that defendent was not on notice of Confidentiality]
[There was a Confidential Relationship]
[The information was used]
[Questionable means not were used]
[Accepted that the Information was not available elsewhere]
[Accepted that the information is not known]
true ;
[Accepted that the information was neither known or available]
[the information was Valuable]
[Accepted that the information was legitimately obtained]
[Accepted that Improper means were used]
[Efforts were not taken to maintain secrecy]
[Accepted that Information was not a trade secret]
[Information was misappropriated]

Отлично! Все выводит, кроме того, что я столкнулся с ошибкой в ​​последней строке. Найти для истца, который должен был вывести. Хотя, глядя на отладку, кажется, что все элементы списка были собраны правильно, хотя 

boeing[f200, f201, f203, f102,f110,f104,f111,
f112,f114,f115,f121,f122,f123,
f4,f6,f12,f14,f21,f1,f10]

1 Ответ

1 голос
/ 30 апреля 2020

В коде много путаницы. 

go(Case) :-
    case(Case, [H|T]),   % Singleton variable! Use _T instead
    getf124(Case, H).

но вы, вероятно, захотите сделать это "пропустить" весь список. H будет f4 только здесь.

Итак: 

go(Case) :-
    case(Case, L), 
    getf124(Case, L).

Здесь: 

getf124(Case,factorsSoFar) :-
   member(f3, factorsSoFar),
   write(['the defendent is the owner of secret']),nl,
   getf123(Case, [f124|factorsSoFar]).

factorsSoFar - это константа (начинается со строчной буквы). Вы, вероятно, хотите: 

getf124(Case,F) :-
   member(f3, F),
   write(['the defendent is the owner of secret']),nl,
   getf123(Case, [f124|F]).

Теперь я не уверен, что должна делать последняя строка выше, но здесь он создает новый список из F, который сначала имеет новый постоянный элемент f124 position.

Та же проблема с константой "как второй аргумент здесь". На самом деле это не «аргумент», так как это означает, что для всех значений Case, Case связано с константой factorsSoFar через отношение getf124 , если ...._ 

getf124(Case,factorsSoFar):-
   write(['Accepted that the defendent is not the owner of secret']),
   nl, getf123(Case,factorsSoFar).

Подсказка: используйте модульное тестирование для лучшего прогресса 

:-begin_tests(boeing).

test(one) :- go(boeing).

:-end_tests(boeing).

rt :- run_tests(boeing).

Теперь вы можете запустить тест с rt.

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