Düben, Christian writes
Thomas, how do you get closeness values larger than 1?
I use common sense. The closeness of a person is the average distance from one to any other, for all others. Since the distance between any pair is at least one, the average must be larger than one.
Do you scale the results by some factor?
No.
Or is the distance between co-authors not 1 in your case?
It is.
With the closeness equation of C(v) = 1 / (\sum_{i \neq v} d(v, i)) where d(v, i) is the length of the shortest cost path between author v and author i and d(v, i) \geq 1, any closeness value should be between 0 and 1.
There is something counter-intuitive in this approach. I said many times, if we don't use a binary model, we will leave our users confused. Alternative weighing schemes should be used to filter out from binary short paths that have the same length. However, the way you do that will not have any impact on the closeness, as expressed in my common sense understanding. It will only impact the betweenness. -- Cheers, Thomas Krichel http://openlib.org/home/krichel skype:thomaskrichel