backpropagation on appendix B

[ricky-lim]

Hi Jon,

I would like to double check with formula part of B.6 at the appendix, please. defining the gradient of the activation function w.r.t. z

Given B.2, I thought part of B.6 should be:

Please check if it is correct and please do let me know otherwise.

Thank you in advance for your time and consideration.

Cheers

[jonkrohn]

Thanks for this, @ricky-lim ! Thoughts, @grantbey ?

[grantbey]

Hi @ricky-lim,

Thanks for this - you're absolutely correct. That term should, in fact, be:

.

Thus, the equation in B.6 should be corrected to:

Thanks for the catch. We'll submit the typo to the publishers for correction.

Well done!