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BPR optimization criteria #5

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lpeska opened this issue Sep 22, 2016 · 1 comment

lpeska commented Sep 22, 2016

Hi!

Thanks for sharing the code!
I have a question regarding to line 79 file bpr.py :
z = 1.0/(1.0+exp(x))

According to the original BPR paper, it seems to me that there should be something like
z = exp(-x)/(1.0+exp(-x))

Am I missing something? Or are those equations proportionally equal?
Thanks,
Ladislav

leihao612 commented Nov 16, 2016

The two equations are equal.

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