I was able to trial and error Exercise 5 on for the first weeks programming assignment called “Propagate” however I dont understand the notations. I know that np.dot referes to matrix multiplication and the * sign refers to element wise multiplication. When calculating the activation there is sigmo…

When to use np.dot

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

paulinpaloalto January 29, 2023, 3:48am 12

Yes, that’s right. Prof Ng chooses to stack the transposed w vectors as the rows of the W weight matrices for NNs. This is explained in the lectures and in this other thread, which I think I already linked above.

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When to use np.dot

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