Why is the adjacency matrix transposed when the graph is directed?

[mrvoh]

mpad/mpad/utils.py

Line 128 in 5af1167

A = A.transpose()

Hi,

First of all, thanks for sharing your code!
I have one specific question related to the line mentioned above: why exactly is the adjacency matrix transposed here? It seems to me that the sliding window over words performed in line 100 - 113 already creates the edges in the natural order of the text (i.e. left to right).

Thanks in advance!