recommend users for certain item

[DeoLeung]

Hi, sorry for the stupid question:

Can this model predict top users for an item by design?
the predict & predict_rank method seem to be designed for user not item
if I do:

prediction = model.predict(all_user_ids, np.repeat(item_id, user_size))
# then sort the prediction

Is the top results reliable?

thank you

[paoloRais]

I think you can obtain what you want by switching the role of the users and items, that is by giving to the model :

• your users as the model's items input,
• you items as the model's users input.

In this way you would get the best users for each item and can use the code as is.

[maciejkula]

Correct, this is the right approach. Think of your items as your users and you can use the model as-is.

[DeoLeung]

Thank you for the reply, I will then just train two models~