Difference between MLS and DLS for the input matrix X and output matrix Y

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

I notice that the input matrix X, W, Y to neural network from the DLS are inverted to the matrix X,W,Y from MLS.
I prefer the matrix setup way from MLS, it seems to be easier to follow.
Can anyone advise?

2

There is no agreed standard in this regard. You may find any possible arrangement of the dimensions, depending on the author of the dataset.

3

Thank you for the advice.
I wrap my head around just for the dimensions change between MLS and DLS.

4

You’re pretty much always going to have to inspect the data set before you use it, to see how it’s organized.