In- and out-degree
Hmm. Good point. We do need not to take anything for granted.
In-degree: the number of edges that connect to the ego. In your example, the ego is Alberto. Edgesense is telling you that Alberto has received comments from 250 different users. That, of course, does not mean he has received 250 comments, because each user is counted only once. If a new user leaves Alberto 10 comments, Alberto’s in-degree will become 250 + 1 = 251; it will NOT become 250 + 10 = 260. This is because the in-degree is the number of edges connecting to a node, and in Edgesense edges represent unique relationships. You can think of comments as being stacked on top of each other to give rise to an edge. As you see from the green pane in the top right, Edgeryders has over 4,000 edges made of over 15,000 comments. The difference between the number of edges and the number of comments is accounted for by the definition of edge (=> unique relationships) that I mentioned.
Out-degree: the number of edges that the ego connects to. In your example, the ego is Alberto. Edgesense is telling you that Alberto has left comments
from to 391 different users. That, of course, does not mean he has left 391 comments, because each user is counted only once. For example, I am already connected to you, @Hazem: I am now leaving you a comment (because this comment is left to a parent comment, this, authored by you). However, this does not give rise to a new edge, because we are already connected. You can check this by looking for yourself in the graph and checking that the node representing me is connected to the node representing you by two edges, one for “me talking to you” and another for “you talking to me”.
So, your last question is meaningless. Alberto in-interacted (=> was left comments by) with 250 other users; and out-interacted (=> left comments to) with 391 other users. Some of these will be the same users, of course! This was done through 250 incoming edges and 391 outgoing edges. The degree of Alberto in this network is simply 250+391.
Is it clearer?