Hi, > I'm running igraph extension for python. I have ran the pagerank fundtion for > a large graph, containing ~500,000 nodes and more than million edges. > Some of the values I got as the page rank result are negative. How is this > possible?
Most likely there’s some kind of a convergence problem within ARPACK (the eigensolver that is used to calculate the PageRank values). If your graph consists of multiple components, try breaking it down into individual connected components using the decompose() method and then calculate the PageRank scores individually. All the best, T. _______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
