Largest eigenvalue differ from true value
I tried to reproduce the results presented in article K.Sharkey (2017) (https://www.nature.com/articles/s41598-017-15426-1) and encountered an issue with largest eigenvalue calculated using graph-tool. When calculating the largest eigenvalue of the example network of the article graph-tool returns value approx 1.8, however the correct true largest eigenvalue of such network is 1.
In the attachment is a notebook where I investigate this issue.