Schreiber, M An empirical investigation of the g-index for 26 physicists in comparison with the h-Index, the A-index, and the R-index JASIST, 59 (9): 1513-1522 JUL 2008

[Eugene Garfield]

E-mail Address: schreiber at physik.tu-chemnitz.de 

Author(s): Schreiber, M (Schreiber, Michael) 

Title: An empirical investigation of the g-index for 26 physicists in 
comparison with the h-Index, the A-index, and the R-index 

Source: JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND 
TECHNOLOGY, 59 (9): 1513-1522 JUL 2008

Language: English 

Document Type: Article 

Keywords Plus: HIRSCH-INDEX; INDICATORS; SCIENTISTS 

Abstract: J.E. Hirsch (2005) introduced the h-index to quantify an 
individual's scientific research output by the largest number h of a 
scientist's papers that received at least h citations. To take into 
account the highly skewed frequency distribution of citations, L. Egghe 
(2006a) proposed the g-index as an improvement of the h-index. I have 
worked out 26 practical cases of physicists from the Institute of Physics 
at Chemnitz University of Technology, and compare the h and g values in 
this study. It is demonstrated that the 9-index discriminates better 
between different citation patterns. This also can be achieved by 
evaluating B.H. Jin's (2006) A-index, which reflects the average number of 
citations in the h-core, and interpreting it in conjunction with the h-
index. h and A can be combined into the R-index to measure the h-core's 
citation intensity. I also have determined the A and R values for the 26 
datasets. For a better comparison, I utilize interpolated indices. The 
correlations between the various indices as well as with the total number 
of papers and the highest citation counts are discussed. The largest 
Pearson correlation coefficient is found between g and R. Although the 
correlation between g and h is relatively strong, the arrangement of the 
datasets is significantly different depending on whether they are put into 
order according to the values of either h or g. 

Addresses: Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany 

Reprint Address: Schreiber, M, Tech Univ Chemnitz, Inst Phys, D-09107 
Chemnitz, Germany. 

E-mail Address: schreiber at physik.tu-chemnitz.de 

Cited Reference Count: 21 

Times Cited: 0 

Publisher: JOHN WILEY & SONS INC 

Publisher Address: 111 RIVER ST, HOBOKEN, NJ 07030 USA 

ISSN: 1532-2882 

DOI: 10.1002/asi.20856 

29-char Source Abbrev.: J AM SOC INF SCI TECHNOL 

ISO Source Abbrev.: J. Am. Soc. Inf. Sci. Technol. 

Source Item Page Count: 10 

Subject Category: Computer Science, Information Systems; Information 
Science & Library Science 

ISI Document Delivery No.: 319MQ 

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