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[documentation] more matrix notes
author Jeff Hammel <k0scist@gmail.com>
date Mon, 04 Sep 2017 14:02:24 -0700
parents 37a9fb876f54
children 59044f78d587
line wrap: on
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    [|  |     | ]
X = [x1 x2 ...xm]
    [|  |     | ]

Z1 = w'X + b1

A1 = sigmoid(Z1)

     [---]
W1 = [---]
     [---]

`W1x1` gives some column vector, where `x1`
is the first training example.