Hi all,<br><br>Earlier today I saw that the Webometrics repository ranking for July 2009 is finally online:<br><a href="http://repositories.webometrics.info/top400_rep_inst.asp">http://repositories.webometrics.info/top400_rep_inst.asp</a><br>
<br>A short introduction about the Webometrics Repository Ranking initiative:<br><br>
The aim of the Ranking is to support Open Access initiatives and
therefore the free access to scientific publications in an electronic
form and to other academic material. The web indicators are used here
to measure the global visibility and impact of the scientific
repositories.<br><br>A full description of the methodology is available here:<a href="http://repositories.webometrics.info/methodology_rep.html"><br>http://repositories.webometrics.info/methodology_rep.html</a><br><br>This afternoon I tried to compare some data from January to the new ranking in July, thanks to some fine work on an excell sheet from Claudia Jürgen in January. As there are some dramatic changes this time, I think the methodology got tweaked, but I don't know exactly what the formula was last time.<br>
<a href="https://eldorado.tu-dortmund.de/handle/2003/26032">https://eldorado.tu-dortmund.de/handle/2003/26032</a><br><br>In january, 43 spots of the top 100 were DSpace repositories. From the ones that were in the top 100 in january, 35 still are today. (Because the online list doesn't have the platform indicated, it's unclear at this point how many DSpaces are in the top 100).<br>
<br>From the ones who were in the top 100 previously, the ranking of following institutions improved (number of spots improved + name institution):<br><br>+2 Cornell University eCommons<br>+2 Kyushu University Institutional Repository<br>
+2 National Library of Finland Dspace Services<br>+4 Ohio State University Knowledge Bank<br>+9 Digital CSIC<br>+10 Igitur Archive Universiteit Utrecht<br>+11 Universidade do Minho Repositorium<br>
+12 Universitat Politécnica de Catalunya Upcommons<br>+17 Kyoto University Research Information Repository<br>+17 INIST I-Revues<br>+30 Biblioteca Digital Jurídica do Superior Tribunal de Justica<br>+31 Boston University Digital Research Archive<br>
+39 University of Tokyo Repository<br>+41 Agecon Search Research in Agricultural and Applied Economics<br>+45 University of Illinois at Urbana Champaign Ideals<br><br>Placed 25th both in January and in July, Georgia Tech is the only DSpace in the same position. <br>
<br>Unfortunately, there were some DSpaces who dropped in the ranking, but are still in the top 100<br><br>-47 Australian National University Dspace<br>-37 University of Adelaide Digital Library<br>-37 Oregon State University Scholarsarchive<br>
-27 Diposit de la Recerca de Catalunya<br>-24 University of Oregon Scholars' Bank<br>-21 University of Calgary Dspace<br>-19 University of Bergen Open Research Archive<br>-18 Jet Propulsion Laboratory Beacon Espace<br>
-16 Caltech Authors<br>-16 Universidad de los Andes Repositorio Institucional<br>-15 Leiden University Digital Repository<br>-15 Research in Atmosphere, Cryosphere, Hydrosphere and Solid Earth Fields<br>
-13 University of Michigan Deep Blue<br>-13 University of Toronto T Space<br>-10 Tartu University Library Dspace<br>-6 Waseda University Dspace<br>-6 University of Helsinki Ethesis<br>
-5 Goteborg University Open Archive<br>-3 MIT Dspace<br><br>I was able to identify a few institutions who weren't in the top 100 before, but are now (position - institution name - positions won):<br>
<br>55 Nagoya University Repository +49<br>82 Nagasaki University Academic Output +40<br>99 Rice University Scholarship +41<br><br>It would be great to hear from the top climbers, if they made certain customizations or improved their repository in a certain way, to explain the improvement in rank. At this point it's very hard to identify whether the change in the algorithm is fully responsible for the changes, or whether best practices at institutions could explain the changes.<br>
<br>To make a further analysis for your institution, it could be useful to compare the 4 different metrics between July & January:<br><br><strong>Size (S)</strong>. Number
of pages recovered from the four largest engines: Google, Yahoo,
Live Search and Exalead.<br>
<strong>Visibility (V).</strong> The total number
of unique external links received (inlinks) by a
site can be only confidently obtained from Yahoo
Search and Exalead.<br>
<strong>Rich Files (R)</strong>. Only the number of text files in Acrobat
format (<em>.pdf</em>) extracted from Google and Yahoo are considered.<br>
<strong>Scholar (Sc)</strong>.
Using Google Scholar database we calculate the mean of the normalised
total number of papers and those (recent papers) published between 2001
and 2008.<br><br>You can see these metrics for july on the webometrics website, and in Claudia's spreadsheet file here:<br><a href="https://eldorado.tu-dortmund.de/handle/2003/26032">https://eldorado.tu-dortmund.de/handle/2003/26032</a><br>
<br>To conclude ... in the absolute top ten, there are no less than 6 DSpace instances, while this was only 3 last time (position - institution name)<br>3 +10 Igitur Archive Universiteit Utrecht<br>4 +12 Universitat Politécnica de Catalunya Upcommons<br>
5 -3 MIT Dspace<br>6 +41 Agecon Search Research in Agricultural and Applied Economics<br>7 +45 University of Illinois at Urbana Champaign Ideals<br>10 +2 National Library of Finland Dspace Services<br>
<br>If you'd like to have my own spreadsheet file, in which I filled in the July positions, please don't hesitate to ask and I'll be happy to send it to you.<br>If you think I made a mistake, or if you want to discuss this ranking, please do, this could be interesting.<br>
<br>with kindest regards,<br><br>Bram Luyten<br><br clear="all">@mire - <a href="http://www.atmire.com">http://www.atmire.com</a><br><br>Technologielaan 9 - 3001 Heverlee - Belgium<br>533 2nd Street - Encinitas, CA 92024 - USA<br>
<br><a href="http://www.togather.eu">http://www.togather.eu</a> - Before getting together, get Tog@ther <br>