Questions and suggestions

[Darel13712]

Hey, just tried your model it works really well!

I have some questions:

• Is it possible to use ELSA without GPU or is it too slow that way?
• Model requires csr matrix, it would be nice if it would automatically do the conversion from coo or other easily convertable formats
• Readme says to use predictions = ((X_test @ A) @ (A.T)) - X_test but why is it X_test and not X_train?
• It would be nice to have a predict method that requires ids of items for top k and filters seen items and not just scores for the whole matrix