[CollEc] CollEc App Offline

[Thomas Krichel]

  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