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

[mrvoh]

https://github.com/giannisnik/mpad/blob/5af1167e24cd5e0921d4894257148705d857eb06/mpad/utils.py#L128

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!