van Eck, NJ (van Eck, Nees Jan); Waltman, L (Waltman, Ludo) Generalizing the h- and g- indices JOURNAL OF INFORMETRICS, 2 (4): 263-271 OCT 2008

[Eugene Garfield]

E-mail Address: nvaneck at few.eur.nl; lwaltman at few.eur.nl 

Author(s): van Eck, NJ (van Eck, Nees Jan); Waltman, L (Waltman, Ludo) 

Title: Generalizing the h- and g- indices 

Source: JOURNAL OF INFORMETRICS, 2 (4): 263-271 OCT 2008 

Language: English 

Document Type: Article 

Author Keywords: h-Index; Hirsch index; h(alpha)-Index; g-Index; g(alpha)-
Index 

Keywords Plus: HIRSCH-INDEX; BIBLIOMETRIC INDICATORS; SCIENTISTS; RANKING; 
OUTPUT 

Abstract: We introduce two new measures of the performance of a scientist. 
One measure, referred to as the h(alpha)-index, generalizes the well-known 
h-index or Hirsch index. The other measure, referred to as the g(alpha)-
index, generalizes the closely related g-index. We analyze theoretically 
the relationship between the h(alpha)-and g(alpha)-indices on the one hand 
and some simple measures of scientific performance on the other hand. We 
also study the behavior of the h(alpha)-and g(alpha)-indices empirically. 
Some advantages of the h(alpha)- and g(alpha)-indices over the h- and g-
indices are pointed out. (C) 2008 Elsevier Ltd. All rights reserved. 

Addresses: [van Eck, Nees Jan; Waltman, Ludo] Erasmus Univ, Erasmus Sch 
Econ, Inst Econometr, NL-3000 DR Rotterdam, Netherlands 

Reprint Address: van Eck, NJ, Erasmus Univ, Erasmus Sch Econ, Inst 
Econometr, POB 1738, NL-3000 DR Rotterdam, Netherlands. 

E-mail Address: nvaneck at few.eur.nl; lwaltman at few.eur.nl 

Cited Reference Count: 33 

Times Cited: 0 

Publisher: ELSEVIER SCIENCE BV 

Publisher Address: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS 

ISSN: 1751-1577 

DOI: 10.1016/j.joi.2008.09.004 

29-char Source Abbrev.: J INFORMETR 

ISO Source Abbrev.: J. Informetr. 

Source Item Page Count: 9 

Subject Category: Information Science & Library Science 

ISI Document Delivery No.: 372LS 

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Is it possible to compare researchers with different scientific interests? 
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An informetric model for the Hirsch-index 
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF 
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SCIENTOMETRICS 75 : 395 2008 

SCHREIBER M
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VANRAAN AFJ
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