Week1 parameter matrix W

[flyunicorn]

In the video of " General implementation of forward propagation", the parameter matrix W has number of features as number of rows, and number of neurons as number of columns. I often get confused how do I know when to make the number of neurons as number of column or rows.

k1

[TMosh]

Depending on the author or the assignment, either orientation might be used. There is no universal standard.