The f Index: Quantifying the Impact of Coterminal Citations on Scientists’ Ranking Dimitrios Katsaros, Leonidas Akritidis, and Panayiotis Bozanis Department of Computer & Communication Engineering, University of Thessaly, Volos, Greece. E-mail:
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[email protected] Designing fair and unbiased metrics to measure the The use of such indicators to characterize a scientist’s merit “level of excellence” of a scientist is a very significant is controversial since this assessment is a complex social task because they recently also have been taken into and scientific process that is difficult to narrow into a sin- account when deciding faculty promotions, when allo- cating funds, and so on. Despite criticism that such sci- gle scientometric indicator. In his recent article, David Parnas entometric evaluators are confronted with, they do have (2007) described some possible negative consequences to the their merits, and efforts should be spent to arm them with scientific progress that could be caused by the “publish or robustness and resistance to manipulation. This article perish” marathon run by all scientists and proposed not tak- aims at initiating the study of the coterminal citations— ing into account the scientometric indicators. Adler, Ewing, their existence and implications—and presents them as a generalization of self-citations and of co-citation; it also and Taylor (2008) depicted several shortcomings of the met- shows how they can be used to capture any manipula- rics currently in use; that is, the Impact Factor and the h tion attempts against scientometric indicators,and finally index. The following phrase, attributed to Albert Einstein, presents a new index, the f index, that takes into account could be representative of the opponents of the scientometric the coterminal citations.