chainer-cf-nade's People
chainer-cf-nade's Issues
Question about preprocessing
The make_rating_matrix method multiplies the rating matrix with a lower triangular matrix mask ( https://github.com/dsanno/chainer-cf-nade/blob/master/src/trainer.py#L15). Why is that done? Can this be rewritten using np.cumsum
?
Question about training
Very beautiful implementation, but I still have a little question.
In your trainer, I see you used "weight", which is the number of items this user rated divided by the number of ratings used for validate of the this user. Why we need this "weight" to modify the softmax loss? I didn't see this in the original paper...
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