Newbie/outsider question on software available to assist visualization of co-citation?

[Loet Leydesdorff]

Dear Christina,

You may wish to look at Pajek, a (freeware) visualization program made by
colleagues at the University of Ljubljana. You can feed the citation matrix
into the program and get a graph (but not a bi-drectional one, that is, with
two arrows). However, Chaomei Chen's program is probably superior to this. I
use Pajek for other purposes (at http://www.leydesdorff.net/jcr04 ).

There is another program called Tobler's flow mapping freely available on
the internet that allows for drawing bi-directional graphs from asymmetrical
matrices. I haven't explored it. The results seem very precisely what one
would like to have.

The download itself is a piece of cake. The parsing processing of the files
thereafter into a citation matrix may a bit more difficult.

With 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
 <mailto:loet at leydesdorff.net> loet at leydesdorff.net ;
<http://www.leydesdorff.net/> http://www.leydesdorff.net/


 <http://www.leydesdorff.net/knbecon> The Knowledge-Based Economy: Modeled,
Measured, and Simulated
 <http://www.universal-publishers.com/book.php?method=ISBN&book=1581126956>
The Self-Organization of the Knowledge-Based Society;
<http://www.universal-publishers.com/book.php?method=ISBN&book=1581126816>
The Challenge of Scientometrics




> -----Original Message-----
> From: ASIS&T Special Interest Group on Metrics
> [mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of Pikas, Christina K.
> Sent: Tuesday, November 08, 2005 8:03 PM
> To: SIGMETRICS at LISTSERV.UTK.EDU
> Subject: [SIGMETRICS] Newbie/outsider question on software
> available to assist visualization of co-citation?
>
> Adminstrative info for SIGMETRICS (for example unsubscribe):
> http://web.utk.edu/~gwhitney/sigmetrics.html
>
> Hi All-
> I find that I'm unable to sit quietly and lurk on the list so
> I hope you'll forgive this question (and maybe answer it!).
>
> I'm trying to visualize who's citing whom between two
> specific organizations (not within a topic). I've searched on
> addresses in WoS and retrieved relevant records and I've been
> playing with Dr. Chaomei Chen's CiteSpace program to
> visualize the results.
>
> My questions:
> 1) should it take ~hours to download 100 records with all the
> options checked?
> 2) is there another program I should try to compare (freely
> available and no programming required)?
> 3) can I do this between organizations, or only between
> people?  In other words, I've got two files in the folder,
> one from University A, one from University B.  The results
> are displayed, but I either have to recognize the names or ?
> Ideally, I'd like to see the citation relationships between
> authors belonging to about 10 institutions.
>
>
> Does this make sense?  Do I have to learn to program and make my own?
> Is this the wrong forum for this question?
>
> Thanks,
>
> Christina K. Pikas, MLS (and Doctoral student, University of Maryland)
>
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