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fedmf's Issues

question

Hi,
I have a question about the result:

Why do regular_mf and fed_mf(part) have similar results on the metric of RMSE when testing? However, the result of distribute_mf(part) is a lot worse?

regular_mf rmse 1.3969165
Fed_mf rmse 1.3965372
distribute_mf rmse 12.182842

Looking forward to your reply. Thank you very much~

update the gradients while update the user_vector?

I have some questions about the gradient descent method in this repo.a response would be greatly appreciated.
Why do u update the gradients while update the user_vector?
Why don't u choose the standard gradient descent method or block coordinate descent method?
Can this accelerate the convergence?

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