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Earlier this month, the CSIC (Spain) published it's Top Institutional Repositories Ranking. After listing 400 institutions in the past, increasing this to 800 last June, the total number of 1121 ranked repositories is now less explicitly mentioned. It's worth mentioning that there are only very little requirements in order to get your repository added to the ranking. The most important requirement is having a unique (sub-level) URL attributed to your repository. Even as a small or starting repository it's useful to be in the ranking, because it's basically a free web-exposure audit, twice a year.
 
A short introduction about the Webometrics Repository Ranking initiative:
 
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.Read a full description of the methodology
 
This months ranking is strongly shaken up, compared to the July 2010 ranking. According to the web page, there are 2 main changes:

Changes in the ranking algorithm always make it very tedious to compare this ranking to previous editions, but as the author, Dr. Isidro F. Aguillo, states:
 
"Web is still evolving, I think in the future, the web will reflect even better the reality, in the meantime I am fueling the virtuous circle. If the ranking push people to web publish then web indicators become more trusted."

 
Thanks to some fine work of Claudia Jürgen in the past, identifying repository platforms for the listed ones, and the work I did on the previous rankings, we compared this new ranking to the old one.
 
In overall, DSpace's presence among the top 100 listed repositories has grown tremendously, with 51 repositories listed now, compared to 41 in July 2010, 45 in January 2010 and 43 in January 2009.
 
We're very proud to see @mire clients, and their repository projects, listed here in bold.
 
January 2011 DSpace Climbers

 
Here are DSpace repositories for which the rank improved, compared to July 2010:
 
+1    EU    School of Advanced Study University of London Space E-Repository
+3    EU    Igitur Archive Universiteit Utrecht
+5    EU    Universitat Politécnica de Catalunya Upcommons
+6    EU    University of Hertfordshire Research Archive
+7    US    ScholarSpace University of Hawai'i at Manoa
+7    EU    Leiden University Digital Repository
+7    EU    Katholieke Universiteit Leuven Lirias Repository
+8    NA    George Mason University Archival Repository Service
+10    EU    Goteborg University Open Archive
+10    NA    University of Calgary Dspace
+12    EU    University of Leicester Research Archive
+13    AS    Obihiro University of Agriculture and Veterinary Medicine Academic Repository
+14    EU    Digital CSIC
+14    AF    University of Pretoria Institutional Repository
+15    NA    University of Oregon Scholars' Bank
+18    NA    National Institute for Technology and Liberal Education Repository
+18    NA    Drexel University e-Repository and Archive
+21    EU    Universidad Carlos III de Madrid Archivo Abierto Institucional
+21    NA    Queen's University Qspace
+21    AU    Flinders University Academic Commons
+21    AU    Australian Defence Science and Technology Organization Repository
+22    AU    University of Canterbury Research Repository
+23    NA    Texas A&M University Digital Repository
+24    AU    University of Technology Sydney Press Institutional Repository
+25    AS    Kyoto University Research Information Repository
+26    NA    University of Michigan Deep Blue
+26    NA    University of Illinois at Urbana Champaign Ideals
+27    AS    University of Hong Kong Scholars Hub
+31    IBC    Universidade Federal do Parana Biblioteca Digital de Teses e Dissertações
+34    AU    University of Sydney E-Scholarship
+35    NA    Kansas State University Research Exchange
+37    EU    University of Helsinki HELDA
+37    EU    Universita degli Studi della Tuscia Dspace
+46    EU    Università di Trieste Openstarts
+47    AS    National Taiwan University Repository
+47    AS    Nagoya University Repository
+48    EU    Universidade do Minho Repositorium
+48    NA    Rochester Institute of Technology Digital Media Library
+49    AS    Kyushu University Institutional Repository
+49    AF    Council for Scientific and Industrial Research Space
+52    EU    Universidad de Alicante Repositorio Institucional
+53    NA    Indiana and Purdue University Indianapolis Digital Archive
+54    IBC    Biblioteca Digital Jurídica do Superior Tribunal de Justica
+54    AS    Waseda University Dspace
+65    EU    Universita degli Studi di Milano Institutional Archive of Research
+69    AS    University of Tokyo Repository
+74    AS    Mie University Scholarly E-Collections
+75    SA    Repositorio de la Escuela Superior Politécnica del Ecuador
+89    NA    University of Washington Researchworks
+89    AS    Japan Advanced Institute of Science and Technology Repository
+90    AS    Ochanomizu University Web Library Institutional Repository
+92    AS    Kanazawa University Repository for Academic Resources
+96    EU    Malmo University Electronic Publishing
+103 AF    Stellenbosch University Scholar Repository
+110 AS    National Tsing Hua University Repository
+119 AS    Nagasaki University Academic Output
+119 AS    Xiamen University Institutional Repository
+122 AS    Yokohama National University Repository
+129 AS    National Chengchi University Repository
+137 AS    Tokyo Gakugei University Repository System
+146 EU    University College of Boras Academic Digital Archive
+170 AS    Kumamoto University Repository
+204 AS    Hokkaido University Collection of Scholarly and Academic Papers
+548 AU    University of Auckland Researchspace
 
January 2011 DSpace droppers

 
Unfortunately, there were some Instances who dropped in the ranking:
 
-473 AS    Kagoshima University Repository
-409 NA    Boston University Digital Research Archive
-330 EU    Halmstad University Scholarly Archive
-213 IBC    Universidad de Chile Repositorio Académico
-201 NA    Youngstown State University Repository
-195 NA    New York University Faculty Digital Archive
-173 AS    Hong Kong University of Science and Technology Institutional Repository
-156 EU    Universitat Dortmund Eldorado Institutionellen Repositorium
-152 AS    Raman Research Institute Digital Repository
-146 NA    University of Manitoba Mspace
-134 AS    Indian Statistical Institute Digital Library
-124 EU    University of Bristol Repository of Scholarly ePrints
-122 EU    Tartu University Library Dspace
-118 EU    Roskilde University Digital Archive
-115 EU    Technical University Ostrava Repository
-113 EU    National Library of Finland Dspace Services
-109 NA    University of Waterloo UWSpace
-102 EU    Loughborough University Institutional Repository
-102 EU    Open University Netherlands Dspace
-90    EU     Université de Liège Open Repository and Bibliography
-84    NA    AMNH Scientific Publications
-79    NA    Caltech Authors
-78    EU    University of Helsinki Ethesis
-78    NA    Université de Montreal Depot Institutionnel Numerique
-77    NA    University of Delaware Library Institutional Repository
-76    NA    University of Kansas Scholarworks
-75    AS    National Institute of Oceanography India Digital Repository
-62    EU    Trinity College University of Dublin Research Archive
-60    EU    University of Macedonia Digital Library & Institutional Repository
-59    EU    University of Edinburgh Research Archive
-59    EU    Aberystwyth University Cadair Repository
-54    NA    Rice University Scholarship
-54    NA    Indiana University Scholarworks
-44    NA    University of Wisconsin Digital Repository
-40    EU    University of Bergen Open Research Archive
-40    EU    Universitat Kassel Dspace
-38    EU    Jyväskylä University Digital Archive
-38    AS    Griffith University Research Online
-38    AS    Tokyo University of Foreign Studies Prometheus Academic Collections
-33    NA    Smithsonian Institution Digital Repository
-33    NA    University of New México Institutional Repository
-33    AS    Indian Institute of Astrophysics Dspace
-33    NA    University of Minnesota Digital Conservancy
-33    NA    Open Access Server of the Woods Hole Scientific Community
-32    EU    Brunel University Research Archive
-30    NA    Georgia Tech's Institutional Repository
-30    EU    Diposit de la Recerca de Catalunya
-24    NA    SUNY Dspace
-23    EU    Vrije Universiteit Amsterdam Academic Repository
-20    EU    Cranfield University CERES
-18    AU    University of Adelaide Digital Library
-17    EU    Libre Acces Aux Rapports Scientifiques et Techniques
-16    EU    Cambridge University Dspace
-15    NA    Ohio State University Knowledge Bank
-13    CA    University of British Columbia CIRCLE
-13    NA    Simon Fraser University Institutional Repository
-12    NA    University of Texas at Austin Libraries Digital Repository
-11    NA    Jet Propulsion Laboratory Beacon Espace
-11    EU    European University Institute Institutional Repository
-7    NA    Oregon State University Scholarsarchive
-6    NA    University of Toronto T Space
-6    IBC    Universidad de los Andes Repositorio Institucional
-6    NA    Cornell University eCommons
-6    EU    Research in Atmosphere, Cryosphere, Hydrosphere and Solid Earth Fields
-5    NA    MIT Dspace
-5    AU    Australian National University Dspace
 
New DSpace entrants in the top 100

 
We were able to identify a few institutions who weren't in the top 100 before, but are now. Unfortunately, we have no exact ranking for these institutions from previous editions.
 
(position - region - institution name):
26   AS  Tamkang University Institutional Repository
30   AS  Hitotsubashi University Repository
35   AS  Tohoku Unviersity Repository
59   IBC  Lume Repositório Digital Universidade Federal do Rio Grande do Sul
74   AS  Shinshu University Institutional Repository
79   AS  Shizuoka University Repository
83   AS  University of Sumatera Utara Repository
89   AS  Universiti Malaya's Institutional Repository
93   EU  Universitat de Barcelona Diposit Digital
 
With many Asian institutions rising, it looks like the Exalead data that were discared this edition was negatively biased towards Asian institutions. This seems now corrected. It was truly amazing to see how Twitter hits on the word "Webometrics" were related to the introduction of the University of Sumatera Utara Institutional Repository. Even the rector officially commented.
http://kampus.okezone.com/read/2011/01/24/373/417222/usu-tembus-peringkat-91-dunia-webometrics (best to use Google Translate or another application if your Indonesian is rusty).
 
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.
 
To make a further analysis for your institution, it could be useful to compare the 4 different metrics between July & January:
 
Size (S). Number of pages recovered from the largest engines: Google and Yahoo.
Visibility (V). The total number of unique external links received (inlinks) by a site can be only confidently obtained from Yahoo Search and Exalead.
Rich Files (R). Only the number of text files in Acrobat format (.pdf) files extracted from Google and Yahoo are considered.
Scholar (Sc). Using Google Scholar database we calculate the mean of the normalised total number of papers and those (recent papers) published between 2001 and 2008.
 
To conclude, a list of DSpace instances that we could identify in the ranking (especially under 200, there are probably a lot more, but we didn't have the time to verify the full list of +1000 repositories).
 
(Current Ranking - Difference between Jan 2010 and July 2010 - Region - Repository name)
 
3    +25    AS    Kyoto University Research Information Repository
4    +47    AS    National Taiwan University Repository
5    +204 AS    Hokkaido University Collection of Scholarly and Academic Papers
8    +26    NA    University of Michigan Deep Blue
12    -5    NA    MIT Dspace
16    +3    EU    Igitur Archive Universiteit Utrecht
17    +54    IBC    Biblioteca Digital Jurídica do Superior Tribunal de Justica
18    +48    EU    Universidade do Minho Repositorium
23    +119 AS    Nagasaki University Academic Output
24    +5    EU    Universitat Politécnica de Catalunya Upcommons
26    NEW    AS    Tamkang University Institutional Repository
27    +49    AS    Kyushu University Institutional Repository
29    +69    AS    University of Tokyo Repository
30    NEW    AS    Hitotsubashi University Repository
31    +14    EU    Digital CSIC
33    +92    AS    Kanazawa University Repository for Academic Resources
34    +54    AS    Waseda University Dspace
35    NEW    AS    Tohoku Unviersity Repository
36    -6    NA    University of Toronto T Space
37    -15    NA    Ohio State University Knowledge Bank
38    -7    NA    Oregon State University Scholarsarchive
39    +110 AS    National Tsing Hua University Repository
40    +10    EU    Goteborg University Open Archive
44    +47    AS    Nagoya University Repository
52    +7    US    ScholarSpace University of Hawai'i at Manoa
53    -6    IBC    Universidad de los Andes Repositorio Institucional
56    -13    CA    University of British Columbia CIRCLE
59    NEW Lume Repositório Digital Universidade Federal do Rio Grande do Sul
61    +52    EU    Universidad de Alicante Repositorio Institucional
63    +129    AS    National Chengchi University Repository
66    -30    NA    Georgia Tech's Institutional Repository
68    +7    EU    Leiden University Digital Repository
72    +75    SA    Repositorio de la Escuela Superior Politécnica del Ecuador
73    +26    NA    University of Illinois at Urbana Champaign Ideals
74    NEW AS Shinshu University Institutional Repository
77    +90    AS    Ochanomizu University Web Library Institutional Repository
79    NEW AS Shizuoka University Repository
80    +15    NA    University of Oregon Scholars' Bank
82    +137    AS    Tokyo Gakugei University Repository System
83    NEW AS University of Sumatera Utara Repository
84    +34    AU    University of Sydney E-Scholarship
86    -12    NA    University of Texas at Austin Libraries Digital Repository
87    -6    NA    Cornell University eCommons
88    -6    EU    Research in Atmosphere, Cryosphere, Hydrosphere and Solid Earth Fields
89    NEW AS Universiti Malaya's Institutional Repository
90    -17    EU    Libre Acces Aux Rapports Scientifiques et Techniques
91    -30    EU    Diposit de la Recerca de Catalunya
93 NEW EU Universitat de Barcelona Diposit Digital
94    +7    EU    Katholieke Universiteit Leuven Lirias Repository
97    -11    NA    Jet Propulsion Laboratory Beacon Espace
99    +170    AS    Kumamoto University Repository
101   +23    NA    Texas A&M University Digital Repository
107    -13    NA    Simon Fraser University Institutional Repository
108    -18    AU    University of Adelaide Digital Library
110    NEW AS Hirosaki University Repository for Academic Resources
111    NEW AS Osaka Kyoiku University Repository
113    +24    AU    University of Technology Sydney Press Institutional Repository
115    +48    NA    Rochester Institute of Technology Digital Media Library
116    -78    EU    University of Helsinki Ethesis
120    -5    AU    Australian National University Dspace
121    +46    EU    Università di Trieste Openstarts
122    NEW Universidade de Brasília Repository
125    -90    EU    Université de Liège Open Repository and Bibliography
126    +89    NA    University of Washington Researchworks
127    +89    AS    Japan Advanced Institute of Science and Technology Repository
129    -33    NA    Smithsonian Institution Digital Repository
132    +21    EU    Universidad Carlos III de Madrid Archivo Abierto Institucional
133    -40    EU    University of Bergen Open Research Archive
138    -76    NA    University of Kansas Scholarworks
139    NEW AS Otaru University of Commerce Academic Collection
141    NEW AS Gifu University Institutional Repository
142    NEW NA YorkSpace York University Institutional Repository
147            Gunma University Academic Information Repository
148    -16    EU    Cambridge University Dspace
152            DADUN. Depósito Académico Digital de la Universidad de Navarra
155    +122    AS    Yokohama National University Repository
157    -79    NA    Caltech Authors
158            Tokyo Women's Medical University Information & Knowledge Database TWINKLE
159    +10    NA    University of Calgary Dspace
160    +37    EU    University of Helsinki HELDA
162            National Central University (Taiwan) Institutional Repository
168    -113    EU    National Library of Finland Dspace Services
171    -33    NA    University of New México Institutional Repository
172    -24    NA    SUNY Dspace
174            Repositorio Digital de Tesis de Grado Escuela Politécnica Nacional
176            Repositorio de la Escuela Superior Politécnica de Chimborazo
177            Meiji University Academic Repository
178    +96    EU    Malmo University Electronic Publishing
180            YOU Campus Repository Yamagata Prefecture Universities
181    +548    AU    University of Auckland Researchspace
182    -54    NA    Rice University Scholarship
183    -44    NA    University of Wisconsin Digital Repository
184            Repositorio Universidad Politécnica Salesiana
188    +35    NA    Kansas State University Research Exchange
190    -59    EU    University of Edinburgh Research Archive
191    +27    AS    University of Hong Kong Scholars Hub
192        EU    Repositório Aberto Universidade do Porto
194    -122 EU    Tartu University Library Dspace
195    -78    NA    Université de Montreal Depot Institutionnel Numerique
196    +49    AF    Council for Scientific and Industrial Research Space
197    +74    AS    Mie University Scholarly E-Collections
199        AS    Nara Womens University Digital Information Repository
200        EU    University of Debrecen Electronic Archive
201        AS    Prince of Songkla University Knowledge Bank
204        NA    University of Maryland Digital Repository
206        EU    Czech Digital Mathematics Library
207        AS    Utsunomiya University Academic Information Repository
208    +18    NA    National Institute for Technology and Liberal Education Repository
209    -20    EU    Cranfield University CERES
211    -33    AS    Indian Institute of Astrophysics Dspace
217            International Development Research Centre Digital Library
218    +31    IBC    Universidade Federal do Parana Biblioteca Digital de Teses e Dissertações
219            Sripatum University Knowledge Bank
220            Bergen Open Research Archive Norwegian School of Economics and Business Administration
223            Aichi University of Education Repository
224            University of Stirling Digital Repository
227    -33    NA    University of Minnesota Digital Conservancy
228    +12    EU    University of Leicester Research Archive
231    -38    EU    Jyväskylä University Digital Archive
232    -77    NA    University of Delaware Library Institutional Repository
238    +21    NA    Queen's University Qspace
240    +21    AU    Flinders University Academic Commons
242    +22    AU    University of Canterbury Research Repository
244    +146    EU    University College of Boras Academic Digital Archive
245    -38    AS    Griffith University Research Online
246    -84    NA    AMNH Scientific Publications
248            University of Toyama Repository
250    +65    EU    Universita degli Studi di Milano Institutional Archive of Research
257    +119    AS    Xiamen University Institutional Repository
264    -11    EU    European University Institute Institutional Repository
266    +21    AU    Australian Defence Science and Technology Organization Repository
269    -33    NA    Open Access Server of the Woods Hole Scientific Community
274    -23    EU    Vrije Universiteit Amsterdam Academic Repository
276    +53    NA    Indiana and Purdue University Indianapolis Digital Archive
279    -32    EU    Brunel University Research Archive
284    +1    EU    School of Advanced Study University of London Space E-Repository
287    +18    NA    Drexel University e-Repository and Archive
288    -54    NA    Indiana University Scholarworks
305    -146    NA    University of Manitoba Mspace
310    -14    AF    University of Pretoria Institutional Repository
312    -62    EU    Trinity College University of Dublin Research Archive
316    -59    EU    Aberystwyth University Cadair Repository
330    -134    AS    Indian Statistical Institute Digital Library
332    +37    EU    Universita degli Studi della Tuscia Dspace
334    +13    AS    Obihiro University of Agriculture and Veterinary Medicine Academic Repository
354    -173    AS    Hong Kong University of Science and Technology Institutional Repository
359    -75    AS    National Institute of Oceanography India Digital Repository
370    -195    NA    New York University Faculty Digital Archive
408    +6    EU    University of Hertfordshire Research Archive
412    -156    EU    Universitat Dortmund Eldorado Institutionellen Repositorium
425    -213    IBC    Universidad de Chile Repositorio Académico
438    +8    NA    George Mason University Archival Repository Service
440    -102    EU    Loughborough University Institutional Repository
458    -40    EU    Universitat Kassel Dspace
471    -118    EU    Roskilde University Digital Archive
474    -109    NA    University of Waterloo UWSpace
480    -201    NA    Youngstown State University Repository
520    -102    EU    Open University Netherlands Dspace
521    -60    EU    University of Macedonia Digital Library & Institutional Repository
554    -38    AS    Tokyo University of Foreign Studies Prometheus Academic Collections
565    -124    EU    University of Bristol Repository of Scholarly ePrints
579    -409    NA    Boston University Digital Research Archive
634    -152    AS    Raman Research Institute Digital Repository
756    -115    EU    Technical University Ostrava Repository
799    -473    AS    Kagoshima University Repository
1040        IBC    Repositorios Institucionais em Ciencias da Comunição
1095 -330    EU    Halmstad University Scholarly Archive
 
If you think we made a mistake, or if you want to discuss this ranking, please do, this could be interesting.

with best regards,

Bram Luyten

@mire

Technologielaan 9 - 3001 Heverlee - Belgium
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