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  1. Prolog
  2. % =================================================================
  3. % データ定義（ファクト）
  4. % =================================================================
  5. product(item1, 3000, 4.8, 20).
  6. product(item2, 1800, 4.2, 200).
  7. product(item3, 5000, 4.9, 5).
  8. product(item4, 2500, 4.5, 80).
  9.  
  10. % =================================================================
  11. % ルール定義
  12. % =================================================================
  13. % おすすめ商品（AIが独自に定義：評価4.5以上 ＆ レビュー15件以上）
  14. recommended_product(Name, Rating, ReviewCount) :-
  15.     product(Name, _, Rating, ReviewCount),
  16.     Rating >= 4.5,
  17.     ReviewCount >= 15.
  18.  
  19. % =================================================================
  20. % メイン処理（ideone用）
  21. % =================================================================
  22. main :-
  23.     write('--- Recommended Products ---'), nl,
  24.     forall(recommended_product(Name, Rating, ReviewCount),
  25.            format('Item: ~w (Rating: ~w, Reviews: ~w)~n', [Name, Rating, ReviewCount])),
  26.     halt.
  27.  
  28. :- initialization(main).
Success #stdin #stdout #stderr 0.01s 6104KB
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stdin
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Standard input is empty
stdout
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--- Recommended Products ---
Item: item4 (Rating: 4.5, Reviews: 80)
stderr
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ERROR: /home/0rkU73/prog:4:67: Syntax error: Operator expected
https://ideone.com/uqB67K
language:
Prolog (swi 7.6.4)
created:
6 days ago
visibility:
public

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