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627224 (1) [Avatar] Offline
#1
At the bottom of the code snippet on page 86 of the PDF it says:

weight_deltas = scalar_ele_mul(ins, weights)

this should actually say :

weight_deltas = scalar_ele_mul(ins, delta)

Took me a while to find out why my answers weren't converging!

613046 (3) [Avatar] Offline
#2
Maybe Andrew was trying to prove us to see if we are indeed learning.