[image] Week 3 - Gradient Descent for Neural Networks Why is dz^{[1]} equal to the loss? Where’s the derivative of the sigmoid function? Why is db simply equal to the sum of dz columns?

Clarfication on Gradient descent for neural networks

saifkhanengr August 16, 2023, 10:41am 2

There are a lot of threads discussing this. Please check this one, two, three, and four.

Week 3 Lecture dz[1]

Topic		Replies	Views
Week 3 Lecture dz[1] Neural Networks and Deep Learning	1	466	August 21, 2023
How we got derivative of dz[1]=w[2]T.dz[2]*g[1]`(z[1]) Neural Networks and Deep Learning week-3	1	232	May 7, 2024
Question about gradient descent for neural network Neural Networks and Deep Learning	5	552	December 12, 2022
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DERIVATIVES OR J or L? Neural Networks and Deep Learning week-4	7	18	February 22, 2025