Comparison of SCImago journal rank indicator with journal impact factor

[Johan Bollen]

Dear Loet, Ricardo,

you may be interested in:

Johan  Bollen, Marko A. Rodriguez, and Herbert Van de Sompel. Journal  
status. Scientometrics, 69(3), December 2006 (arxiv.org:cs.DL/ 
0601030, DOI: 10.1007/s11192-006-0176-z).

We found rho=0.48, p<0.01, N=5,710 between the 2003 IF and weighted  
PageRank rankings, i.e. a moderate but significant correlation.  
However, the list of top ranked journals (Table 1) did differ  
significantly and you would have probably found an insignificant  
correlation on that basis.

Regards,

Johan.

On Apr 22, 2008, at 7:36 AM, Lic. Ricardo Arencibia Jorge wrote:
> Adminstrative info for SIGMETRICS (for example unsubscribe): http:// 
> web.utk.edu/~gwhitney/sigmetrics.html
> Dear Loet,
>
> yes, its very interesting, because the influence weight change the  
> point of view (I remember now the work of Pinsky & Narin (1976), or  
> recent projects like "eigenfactor.org", etc. In this sense, the  
> SCImago Journal and Country Rank will exceed the expectations. The  
> aim of this project is ambitious, and the probability of this  
> project to achieve great results in the field of science  
> assessments is high.
>
> I think the correlation IF - SJR  will be significant if we take  
> into acount all the journals comprised in the SCImago Journal Rank  
> (We had been developing some experimental studies in specific  
> fields, and the correlation is alwais significant, for the  
> moment ;-). Thats the reason because Dr. Falagas did not emphasize  
> that point in our article.
>
> However, the analysis of the first 20 journals (as you noted) is an  
> incentive in order to develop more deep studies of the indicators  
> presented by the SCImago Research Group.
>
> Friendly Regards,
>
> Ricardo
> ----- Original Message -----
> From: Loet Leydesdorff
> To: SIGMETRICS at LISTSERV.UTK.EDU
> Sent: Monday, April 21, 2008 11:52 AM
> Subject: Re: [SIGMETRICS] Comparison of SCImago journal rank  
> indicator with journal impact factor
>
> Adminstrative info for SIGMETRICS (for example unsubscribe): http:// 
> web.utk.edu/~gwhitney/sigmetrics.html
> Dear Ricardo,
>
> I could not resist looking at your table 2 to compute the rank- 
> order correlations between the IF and the SJR.
>
> For the top 20 in the SCI, the correlations are as follows:
>
> <000c01c8a47d$ec51f300$fd03240a>
> For the top 20 on the SJR, the correlations are as follows:
>
> <000d01c8a47d$ec51f300$fd03240a>
> The correlations are not significant.
> Interesting, isn't it?
>
> Best wishes, Loet
> Loet Leydesdorff
> Amsterdam School of Communications Research (ASCoR),
> Kloveniersburgwal 48, 1012 CX Amsterdam.
> Tel.: +31-20- 525 6598; fax: +31-20- 525 3681
> loet at leydesdorff.net ; http://www.leydesdorff.net/
>
>
> From: ASIS&T Special Interest Group on Metrics  
> [mailto:SIGMETRICS at listserv.utk.edu] On Behalf Of Lic. Ricardo  
> Arencibia Jorge
> Sent: Saturday, April 19, 2008 8:53 PM
> To: SIGMETRICS at listserv.utk.edu
> Subject: [SIGMETRICS] Comparison of SCImago journal rank indicator  
> with journal impact factor
>
> Adminstrative info for SIGMETRICS (for example unsubscribe): http:// 
> web.utk.edu/~gwhitney/sigmetrics.html
> Dear Colleagues,
>
> I am sending the link of a paper developed by Matthew E. Falagas  
> and his team from the Alpha Institute of Biomedical Sciences  
> (Athens, Greece), and with the collaboration of Henry Dunant  
> Hospital (Athens, Greece) and the Network of Scientometrics Studies  
> for Higher Education (Havana, Cuba). Its a brief comparison of  
> Journal Citation Report and SCImago Journal & Country Rank, and  
> between the most important indicators both presented: the Impact  
> Factor and the SCImago Journal Rank. These results are only the  
> beginning of several works that I am sure will be developed in the  
> near future in order to statistically compare both indicators.
>
> Falagas ME, Kouranos VD, Arencibia R, Karageorgopoulos DE.  
> Comparison of SCImago journal rank indicator with journal impact  
> factor. FASEB Journal 2008, Apr 11. http://www.fasebj.org/cgi/ 
> content/abstract/fj.08-107938v1
>
> Best regards,
>
> BSc. Ricardo Arencibia-Jorge
> Network of Scientometric Studies for Higher Education
> National Scientific Research Center, Havana, Cuba.
> ricardo.arencibia at cnic.edu.cu
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