Correction: Discovering SIFIs in Interbank Communities.

[This corrects the article DOI: 10.1371/journal.pone.

Discovering SIFIs in Interbank Communities.

This paper proposes a new methodology based on non-negative matrix factorization to detect communities and to identify central nodes in a network as well as within communities. The method is specifically designed for directed weighted networks and, consequently, it has been applied to the interbank network derived from the e-MID interbank market. In an interbank network indeed links are directed, representing flows of funds between lenders and borrowers.