Comparative analysis of co-authorship networks considering authors' roles in collaboration: Differences between the theoretical and application areas

Many studies have analyzed direct partnerships in co-authorship networks. On the other hand, the global network structure, including indirect links between researchers, has not yet been sufficiently studied. This study analyzes researchers' activities from the viewpoints considering their roles in the global structures of co-authorship networks, and compares the co-authorship networks between the theoretical and application areas in computer science. The modified HITS algorithm is used to calculate the two types of importance of researchers in co-authorship networks, i.e., the importance as the leader and that as the follower.