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Computational Error on PositionalEncoder() #7

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jacobastern opened this issue May 8, 2019 · 1 comment
Open

Computational Error on PositionalEncoder() #7

jacobastern opened this issue May 8, 2019 · 1 comment

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@jacobastern
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I read your blog post in TowardsDataScience on this model, and I think there may be a computational error in line 27 of Transformer/Embed.py. In the paper and in other implementations, like this one, we should have PE_(pos, 2i+1) = math.cos(pos / (10000 ** ((2 * i)/d_model))), not math.cos(pos / (10000 ** ((2 * (i + 1))/d_model))), as the code currently stands.

@orena1
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orena1 commented Jul 23, 2019

I think @jastern33 is correct, this is the result from this github:
image

And this is from - http://nlp.seas.harvard.edu/2018/04/03/attention.html
image

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