Course 1 week 2 assignment 2 wrong cost assignment

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
1

Hi, I get all right results until exercise 5 , my cost function is computed as
cost = - (np.dot(Y,np.log(A).T)+np.dot((1-Y),np.log(1-A).T))/m
but then for exercice 6 I get AssertionError: Wrong values for costs. [array(5.80154532), array(0.58923175)] != [5.80154532, 0.31057104]
What did I do wrong?

2

It’s close. You see the error in updating b. It must be “db”, not “b”.
By the way, posting your code in here is not recommended. We start with Trackback.
So, please remove them

By the way, learning_rate is a scaler. So, you may not be necessary to use np.dot to update w. :slight_smile:

1 Like