Làm sao để kết quả không bị trùng lập

Tôi có một đoạn code như thế này

product_df = pd.read_csv("/content/drive/MyDrive/Dean3/Rating_product_title2.txt")

product_not_rating = product_df[
    ~product_df["ProductId"].isin(products_rating_by_user.ProductId.values)
]["ProductId"]
product_not_rating = list(
    set(product_not_rating).intersection(set(product2product_encoded.keys()))
)

product_not_rating = [[product2product_encoded.get(x)] for x in product_not_rating]
user_encoder = user2user_encoded.get(user_id)
user_product_array = np.hstack(
    ([[user_encoder]] * len(product_not_rating), product_not_rating)
)
ratings = model.predict(user_product_array).flatten()
top_ratings_indices = ratings.argsort()[-5:][::-1]
recommended_product_ids = [
    product_encoded2product.get(product_not_rating[x][0]) for x in top_ratings_indices
]

print("Showing recommendations for user: {}".format(user_id))
print("====" * 9)
print("Product with high ratings from user")
print("----" * 8)
top_product_user = (
    products_rating_by_user.sort_values(by="Rating", ascending=False)
    .head(5)
    .ProductId.values
)
product_df_rows = product_df[product_df["ProductId"].isin(top_product_user)]
for row in product_df_rows.itertuples():
    print(row.ProductId, ":", row.Title)

print("----" * 8)
print("Top 5 product recommendations")
print("----" * 8)
recommended_products = product_df[product_df["ProductId"].isin(recommended_product_ids)]
for row in recommended_products.itertuples():
    print(row.ProductId, ":", row.Title)

Và kết quả tôi nhân được là

6/6 [==============================] - 0s 2ms/step
Showing recommendations for user: 56
====================================
Product with high ratings from user
--------------------------------
1304511154 : Mac Magic N 8 Leopard 12 Eyeshadow Palette European Collection
1304511154 : Mac Magic N 8 Leopard 12 Eyeshadow Palette European Collection
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
6022600685 : Professional Hair Stylist Aluminum Rolling Tool Box Makeup Artist Salon Train Case
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9511181564 : 33.8 Fluid Oz Shower Gel
9788071538 : Sim plus Men's online shopping
9788071538 : Sim plus Men's online shopping
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
9788074359 : Organization Performance And System Choice (2019)
--------------------------------
Top 5 product recommendations
--------------------------------
4057362886 : Instyle Perfume Sex In City Desire Eau de Parfum Spray for Women 100 ml
5357955867 : Starter Retail Products Details 16303a1f-d
5357955867 : Starter Retail Products Details 16303a1f-d
5357955867 : Starter Retail Products Details 16303a1f-d
5357955867 : Starter Retail Products Details 16303a1f-d
5357955867 : Starter Retail Products Details 16303a1f-d
9602617918 : Q10 Skin Solution Anti-Aging Multi-Active
9602617918 : Q10 Skin Solution Anti-Aging Multi-Active
9602617918 : Q10 Skin Solution Anti-Aging Multi-Active
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788073476 : New Item VIKTOR & ROLPH SPICEBOMB EDT SPRAY 3.0 
9788074286 : Organization Performance And System Choice (2019)
9788074286 : Organization Performance And System Choice (2019)
9788074286 : Organization Performance And System Choice (2019)
9788074286 : Organization Performance And System Choice (2019)
9788074286 : Organization Performance And System Choice (2019)
9788074286 : Organization Performance And System Choice (2019)

Làm sao để kết quả không bị trùng lặp vậy ?