The cluster transitivity (the fraction of closed triangles ) of g is equal to: C =(number of triangles) × 3/(number of connected triples)
Formula (7.28) Networks Mark Newman (2018)
I would like to ask you about the method cluster_transitivity() It gives 0.0853107962707866 for this network: http://snap.stanford.edu/data/email-Enron.html , but the table from this page shows that Fraction of closed triangles is 0.03015. So, these two number are not equal.
If I omit 3 in the formula (7.28) I get 0.0284369320902622.
Why?
On this page: http://snap.stanford.edu/data/index.html (at the end) we have a definition of the fraction of closed triangles: Number of connected triples of nodes / number of (undirected) length 2 paths