Comparison of SCImago journal rank indicator with journal impact factor

Wed Apr 23 15:54:41 EDT 2008

Dear Loet,

Page-rank and many other algorithms are available in Indiana's (free)
Network Workbench (http://nwb.slis.indiana.edu/). DrL (a version of Sandia's
VxOrd) has also been implemented in NWB.

Best wishes,
Kevin

-----Original Message-----
From: ASIS&T Special Interest Group on Metrics
[mailto:SIGMETRICS at listserv.utk.edu] On Behalf Of Loet Leydesdorff
Sent: Wednesday, April 23, 2008 1:07 PM
To: SIGMETRICS at listserv.utk.edu
Subject: Re: [SIGMETRICS] Comparison of SCImago journal rank indicator with
journal impact factor

Dear Johan, 

I know your paper. 
Can you perhaps provide me with the full list of the pageranks for 2006 or
make it available on the Internet? Scimago does a very nice job in bringing
their data online as an excel file.

We could perhaps combine forces? I would expect the page-ranking algorithm
to end-up more in the middle like the h-index because it pays attention to
citations/publications, but it also might be sensitive to size-effects. You
may be able to specify a more precise expectation.

Is the page-rank algorithm available in one of the (non-commercial) programs
of social network analysis?

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/ 

> -----Original Message-----
> From: ASIS&T Special Interest Group on Metrics 
> [mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of Johan Bollen
> Sent: Tuesday, April 22, 2008 5:42 PM
> To: SIGMETRICS at LISTSERV.UTK.EDU
> 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 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
> > http://directorioexit.info/consulta.php? 
> > directorio=exit&campo=ID&texto=478
> > http://redec-mes.blogspot.com/
> 