Abstract:
Identifying key players in collective dynamics remains a challenge in several research
fields, from the efficient dissemination of ideas to drug target discovery in biomedical problems. The
difficulty lies at several levels: how to single out the role of individual elements in such intermingled
systems, or which is the best way to quantify their importance. Centrality measures describe a node's
importance by its position in a network. The key issue obviated is that the contribution of a node to
the collective behavior is not uniquely determined by the structure of the system but it is a result of the
interplay between dynamics and network structure.