Hello, > At centrality.c:362 :Weighted directed graph in eigenvector centrality" This warning is emitted because weighted directed graphs can introduce all sorts of complications with the eigenvector calculation. (To be honest, some of these complications are present even with non-weighted directed graphs):
- Directed acyclic graphs will have an all-zero eigenvector centrality vector. - Directed graphs with negative weights may have eigenvector centrality vectors with complex members - in this case, igraph will report the real part only. - If a vertex is not in a strongly connected component of size at least 2, or in the out-component of such a component, then its eigenvector centrality will be zero. If you are sure that your graph does not have these issues, then it is fine to use the eigenvector centrality. Otherwise, I would recommend using the PageRank instead as it is better suited for directed graphs. T. _______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
