[Sigmetrics] The One-Percent Club For Top-Cited Papers

Loet Leydesdorff loet at leydesdorff.net
Mon Jul 31 13:59:51 EDT 2017

Dear Philip:

There is no a priori reason to focus on the top-1%, top-10%, or any 
other percentile class. One can use the quantile values (Q) of all 
papers (xi) in a journal and then integrate using Σixi * Q(xi). A paper 
in the top-1% group then has a value of 99+ and a median paper will 
count as 50. See my paper: “Alternatives to the journal impact factor: 
I3 and the top-10% (or top-25%?) of the most-highly cited papers.” 
Scientometrics, 92(2), 355-365. We elaborated this for journals in: 
Leydesdorff, L., & Bornmann, L. (2012). “Percentile Ranks and the 
Integrated Impact Indicator (I3).” Journal of the American Society for 
Information Science and Technology, 63(9), 1901-1902.


Loet Leydesdorff

Professor, University of Amsterdam
Amsterdam School of Communication Research (ASCoR)

loet at leydesdorff.net <mailto:loet at leydesdorff.net>; 
Associate Faculty, SPRU, <http://www.sussex.ac.uk/spru/>University of 

Guest Professor Zhejiang Univ. <http://www.zju.edu.cn/english/>, 
Hangzhou; Visiting Professor, ISTIC, 

Visiting Fellow, Birkbeck <http://www.bbk.ac.uk/>, University of London;


------ Original Message ------
From: "Philip Davis" <pmd8 at cornell.edu>
To: sigmetrics at mail.asis.org
Sent: 7/31/2017 4:35:14 PM
Subject: [Sigmetrics] The One-Percent Club For Top-Cited Papers

>An alternative to the Journal Impact Factor, Nature editors propose an 
>index that measures highly cited papers.
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