Zhao, DZ (Zhao, Dangzhi); Strotmann, A (Strotmann, Andreas) Comparing all-author and first-author co-citation analyses of information science JOURNAL OF INFORMETRICS, 2 (3): 229-239 JUL 2008

[Eugene Garfield]

E-mail Address: dzhao at ualberta.ca; andreas.strotmann at ualberta.ca 

Author(s): Zhao, DZ (Zhao, Dangzhi); Strotmann, A (Strotmann, Andreas) 

Title: Comparing all-author and first-author co-citation analyses of 
information science 

Source: JOURNAL OF INFORMETRICS, 2 (3): 229-239 JUL 2008 

Language: English 

Document Type: Article 

Author Keywords: author co-citation analysis; bibliometrics; information 
science; Scopus; citation analysis 

Keywords Plus: WEB 

Abstract: Although it is generally understood that different citation 
counting methods can produce quite different author rankings, and 
although "optimal" author co-citation counting methods have been 
identified theoretically, studies that compare author co-citation counting 
methods in author co-citation analysis (ACA) studies are still rare. The 
present study applies strict all-author-based ACA to the Information 
Science (IS) field, in that all authors of all cited references in a 
classic IS dataset are counted, and in that even the diagonal values of 
the co-citation matrix are computed in their theoretically optimal form. 
Using Scopus instead of SSCI as the data source, we find that results from 
a theoretically optimal all-author ACA appear to be excellent in practice, 
too, although in a field like IS where co-authorship levels are relatively 
low, its advantages over classic first-author ACA appear considerably 
smaller than in the more highly collaborative ones targeted before. 
Nevertheless, we do find some differences between the two approaches, in 
that first-author ACA appears to favor theorists who presumably tend to 
work alone, while all-author ACA appears to paint a somewhat more recent 
picture of the field, and to pick out some collaborative author clusters. 
(C) 2008 Elsevier Ltd. All rights reserved. 

Addresses: Univ Alberta, Sch Lib & Informat Studies, Edmonton, AB T6G 2J4, 
Canada; Univ Alberta, Sch Business, Edmonton, AB T6G 2R6, Canada 

Reprint Address: Zhao, DZ, Univ Alberta, Sch Lib & Informat Studies, 3-20 
Rutherford S, Edmonton, AB T6G 2J4, Canada. 

E-mail Address: dzhao at ualberta.ca; andreas.strotmann at ualberta.ca 

Cited Reference Count: 17 

Times Cited: 0 

Publisher: ELSEVIER SCIENCE BV 

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

ISSN: 1751-1577 

DOI: 10.1016/j.joi.2008.05.004 

29-char Source Abbrev.: J INFORMETR 

ISO Source Abbrev.: J. Informetr. 

Source Item Page Count: 11 

Subject Category: Information Science & Library Science 

ISI Document Delivery No.: 327ZQ 

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