A scientometrics law about co-authors and their ranking. The co-author core

摘要: Rather than “measuring” a scientist impact through the number of citations which his/her published work can have generated, isn’t it more appropriate to consider value scientific network performance illustrated by co-author role, thus focussing on joint publications, and their citations? Whence, one hand, this paper very briefly examines bibliometric laws, like h-index subsequent debate about co-authorship effects, but other proposes measure collaborative new index. Based data publication output specific research group, law is found. Let C written J (joint) publications with or several colleagues. Rank all co-authors that individual according giving rank r each co-author, starting r = 1 for most prolific. It empirically found simple relationship holds between coauthors importance, i.e., ∝ 1/r. Thereafter, in same spirit as Hirsch core, define “co-author core”, introduce indices operating an author. emphasized index has quite different (philosophical) perspective h-index. In present case, focusses “relevant” persons rather publications. Although numerical discussion based “main author” two “control” cases, there little doubt be verified many situations. Therefore, variants generalizations could later produced order quantify roles, temporary long lasting stable team(s), lead criteria funding, career measurements even induce strategies.