deep-learning

np.dot and @ compute the dot product and the matrix product

taught

Taught in

numpy-arrays-as-vectors-and-matrices required
the-dot-product-vectors required
np.dot(w, x) is Chapter 3's w . x, one line instead of a hand sum.
matrix-vector-multiplication-two-ways-the-row-picture required
W @ x is Chapter 3's Wx, every row's dot product computed at once.

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