[igraph] cut-offs and betweenness/closeness centrality

[Jan Schulz]

Hi,

I'm using python igraph to analyse a co-author network of 70k Nodes.
Using centrality measurements like closeness and betweenness will take
ages on that network, which is why I started to use cutoffs
(closeness(cutoff=20) and betweenness(cutoff=10) -> takes about 20-60
minutes now...).

Unfortunately I can't find any scientific reference how such a cutoff
influences the validity of the results. Are there any such references
available? Or any rules of thumb?

Thanks a lot!

Kind regards,

Jan
--
Jan Schulz
mail: address@hidden