I have some doubts with this measure.
In my directed graph the results of in degree and out degree are the same. It should not be the same.
Does anybody know how the calculation of this measure is made?
[FIXED] In/Out Degree
-
pbittner
- Gephi Plugin Developer
- Posts:35
- Joined:18 Mar 2010 23:03
- Location:London, UK [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
Re: In/Out Degree
If you are talking about the Average In Degree and Average Out Degree calculated with the In/Out Degree statistic, it is normal to find identical values. They are calculated by summing the in degree (or out degree) value of each node that make the graph and dividing the final sum by the number of nodes.
With a directed graph: AvgInDegree = AvgOutDegree = NbEdges/NbNodes.
With a directed graph: AvgInDegree = AvgOutDegree = NbEdges/NbNodes.
-
doglaus
- Posts:2
- Joined:24 Aug 2010 22:46 [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
Re: In/Out Degree
In a directed graph. The In Degree isnt the number of edges that arrives in one node? And the out degree isnt the number of edges that leaves a node?
If the calculation is the same why two different names to the same result? There is any case that the values are different?
If the calculation is the same why two different names to the same result? There is any case that the values are different?
-
pbittner
- Gephi Plugin Developer
- Posts:35
- Joined:18 Mar 2010 23:03
- Location:London, UK [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
Re: In/Out Degree
You are correct about the definitions of In Degree and Out Degree. When running the In/Out Degree statistic, these two metrics are calculated for each node of the graph and displayed in the Data Laboratory and the Edit panel. The AvgInDegree and AvgOutDegree shown in the statisctic report are identical for a directed graph but the calculation done to obtain them is different. Therefore, I think that it is good to mention both. But I agree with you on the fact that it is a little misleading.
-
arwelsh
- Posts:2
- Joined:20 Mar 2013 18:01 [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
Re: [FIXED] In/Out Degree - with multiple edges between node
Quick additional question regarding the calculation of in and out degree...
I know that Gephi cannot show multiple connections between two nodes, and that it applies an algorithm to accommodate that fact by applying an edge weight value. However, does Gephi record the directionality of the edges that it is combining? i.e. when In Degree is calculated, is Gephi incorporating all of the data that was uploaded, or, a version based on the fewer edges that have been combined?
I know that Gephi cannot show multiple connections between two nodes, and that it applies an algorithm to accommodate that fact by applying an edge weight value. However, does Gephi record the directionality of the edges that it is combining? i.e. when In Degree is calculated, is Gephi incorporating all of the data that was uploaded, or, a version based on the fewer edges that have been combined?
-
Maria Croatia
- Posts:1
- Joined:12 Sep 2016 17:24 [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
Re: [FIXED] In/Out Degree
What does mean value and count in gephi statistics. I have 40 nodes and 42 edges. I cant read the meaning of value and count.I don't understand in what measures is that. Thank You