could you please list the papers that explain the loss function

[wyfoffice]

The loss function in the part Augmented Alternating Least Squares (Augmented-ALS) is quite puzzle to me, would you mind attaching the links of papers that related to this loss function?
more specifically, I wish to know this part:

why can we add the auG to the latent factor vector? As auG is about the user information while xu is to the User-Item matrix

Thanks in advance!

[CSKrishna]

hi,, this is one way of augmenting the latent factor with a projection of the user/item's features. A similar approach was used in
https://arxiv.org/abs/1609.02116
Hope this helps clarify the loss function

[wyfoffice]

Great!
Many thanks to you!