can anyone explain to me how gephi is calculating the betweenness centrality figures,
because I am unable to explain the oddity in my graphs.
In my particular case all edges are weighted with 1, as I want to highlight the number of edges without the modulary class (blocs) as a measure of centrality in the whole system.
The case I am unable to explain is the huge difference between Cameroon and Israel in my graph.
Cameroon is ranked at a betweenness value of 794.99 and a weighted degree of 32.0
Israel on the other hand has a betweenness value of only 125.01 with a weighted degree of 40.0
attached are two pictures which visualize this oddity ... to me it seems that Israel is more central than Cameroon ... but gephi thinks otherwise.
![Image](http://i50.tinypic.com/4zxn9z.jpg)
![Image](http://i45.tinypic.com/2eoxxs0.jpg)
any ideas on why this huge betweenness centrality value difference? and how to rectify it?
thanks in advance
![Wink ;)](./images/smilies/icon_e_wink.gif)