(Choose 1 answer)
A. (1)
B. (II)
C. (III)
D. (IV)
You are training a three layer neural network and would like to use backpropagation to compute the gradient of the cost function. In the backpropagation algorithm, one of the steps is to update (2)+83)*((2)), for every i, j. Which of the following is a correct vectorization of this
step?
(1) (2) (2) + (3) * ((2))T
(II) (2) (2) + ((3)) * (3)
(III) A(2) = 2 + 8(2) * ((2)) T
(IV) A(2) = (2) + ((2)) * (3)
E 47
