Webometrics Institutional Repository Ranking July 2012

Last month, the CSIC Cybermetrics Lab (Spain) published its Top Institutional Repositories Ranking. In total, 1440 institutional repositories were ranked. It is worth mentioning that there are very few requirements in order to get your repository added to the ranking. For starters, inclusion is free of charge. The most important requirement is having a unique (sub-level) URL attributed to your repository. Even for small or new repositories, it is useful to be included in the ranking because the ranking basically offers a free, twice-yearly web-exposure audit. There are 42 DSpace installations in the top 100 compared to 43 from January of 2012.

A short introduction to the Webometrics Repository Ranking initiative

The aim of the ranking is to support Open Access initiatives and therefore the free and open access to online scientific publications and other scholarly materials. The web indicators are used here to measure the global visibility and impact of scientific repositories. Read a full description of the methodology

Evolutions in the ranking reflect following changes

  • Changes to the ranking algorithm
  • Changes in the internal search engine algorithms (necessary since the ranking is based on visibility in search engines)
  • Improvements or defects on the level of the repository itself: more content, search engine optimization, link building, downtime …

Because of the many variables, it is nearly impossible to put your finger on a strong causal relation between fluctuations of your repository's ranking and one of these possible causes. However, witnessing a sizeable drop of your repository in the ranking can motivate a more in-depth investigation and search engine optimization.

Changes to the ranking algorithm in July 2012

In January, Majestic SEO was introduced as a new database used in the ranking to keep track of incoming links to repositories. The number of incoming links is very important for the ranking as they determine the visibility indicator that counts for 50% of the total weight. In order to make sure that the ranking is not relying on a single source of data, the ranking now introduces AHREFS as another source of incoming link data in order to increase the reliability of the visbility indicator.

The inclusion of AHREFS data is not the only change to the visibility indicator. Repositories are now rewarded to get those incoming links from different domains. The effect is substantial, because the number of incoming links gets multiplied by the number of domains where the backlinks originate.

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:

"[The] 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."

DSpace Repositories in the top 200

The following list represents a subset of the official repository ranking in which we only include DSpace instances. @mire's clients are highlighted in blue. The evolution presented here is the rise or drop in positions compared to the January 2012 ranking.

Current Ranking2012 EvolutionName
60Igitur Archive Universiteit Utrecht
8-3MIT Dspace
11-2National Taiwan University Repository
120Universitat Politécnica de Catalunya Upcommons
16+5University of Sumatera Utara Repository
20+16Digital CSIC
22-5Georgia Tech's Institutional Repository
25+174Universidad de los Andes Repositorio Institucional
26-4Universidade do Minho Repositorium
27-12University of Michigan Deep Blue
29-4Katholieke Universiteit Leuven Lirias Repository
32-5Ohio State University Knowledge Bank
33+247Repositorio de la Escuela Superior Politécnica del Ecuador
34-18Kyoto University Research Information Repository
36+1Leiden University Digital Repository
39+7Université de Liège Open Repository and Bibliography ORBi
43+11Goteborg University Open Archive
44+4University of British Columbia CIRCLE
48-16University of Oregon Scholars' Bank
49N/AUniversity of Adelaide Digital Library
52-10Universidad de Alicante Repositorio Institucional
54-10Oregon State University ScholarsArchive @ OSU
550National Tsing Hua University Repository
58+349University of Illinois at Urbana Champaign Ideals
60+21University of Helsinki HELDA
61-38University of Toronto T Space
64+57National Central University (Taiwan) Institutional Repository
66-21Hokkaido University Collection of Scholarly and Academic Papers
75-36University of Hawai'i at Manoa ScholarSpace
76N/AYorkSpace York University Institutional Repository
77-19Kyushu University Institutional Repository
78-21National Chengchi University Repository
85-10Kansas State University Research Exchange
87+23University of Sydney E-Scholarship
88-18Jyväskylä University Digital Archive
91N/ARepositorio Digital ESPE
92+11University of Wisconsin Digital Repository
94-1National Cheng Kung University Institutional Repository
95+118Universidade de Brasília Repository
97-11Malmo University Electronic Publishing
97+2University of Tokyo Repository
100N/ABogor Agricultural University Scientific Repository
101+27Institutional Repository der Universität Konstanz
104+25Universidad Carlos III de Madrid Archivo Abierto Institucional
106+35University of Canterbury Research Repository
109-36Texas A&M University Digital Repository
113+10Gredos Repositorio Documental Universidad de Salamanca
115-27Tartu University Library Dspace
116-25Universidade Federal do Parana Biblioteca Digital de Teses e Dissertações
121+35Université de Montreal Depot Institutionnel Numerique
122-26University of Auckland Researchspace
123+59University of Maryland Digital Repository
124+21University of Minnesota Digital Conservancy
125+30University of Technology Sydney Press Institutional Repository
126-18Tamkang University Institutional Repository
129-26University of Kansas Scholarworks
130+13University of Waikato Research Commons
135+125Vanderbilt University DiscoverArchive
136-29Rochester Institute of Technology Digital Media Library
137-21National Institute for Technology and Liberal Education Repository
139-28Vrije Universiteit Amsterdam Academic Repository
141+6Stellenbosch University Scholar Repository
144-8Universita degli Studi di Milano Institutional Archive of Research
145+42Repositório Aberto Universidade do Porto
146+32University of South Africa Institutional Repository
147-49Rice University Scholarship
1480Open Universiteit Digital Repository
151-33Cornell University eCommons
152+52BADA University College of Boras Academic Digital Archive
153-82Open Access Server of the Woods Hole Scientific Community
1540Duke University DukeSpace
157-22Cadmus European University Institute Institutional Repository
158-19University of Debrecen Electronic Archive
161-8Council for Scientific and Industrial Research Space
163+9Hong Kong University of Science and Technology Institutional Repository
166+102Repositorio Universidad Politécnica Salesiana
167-48Nagasaki University Academic Output NAOSITE
168-78Kanazawa University Repository for Academic Resources
169+591Cambridge University Dspace
173+644University of Edinburgh Research Archive
178-46Kumamoto University Repository
179-6University of Patras Institutional Repository
180-56SUNY Dspace
181+19Universiti Malaysia Perlis Library Digital Repository
187+3Brunel University Research Archive
187+38Cranfield University CERES
191+63Radboud University Repository
192-18Universitat de Barcelona Diposit Digital
192+381Lume Repositório Digital Universidade Federal do Rio Grande do Sul
193+39Wichita State University Shocker Open Access Repository
198-148University of Hong Kong Scholars Hub
200-131AMNH Scientific Publications

Trending Climbers

Instead of restricting our report to the improvements between January and July 2012, we aimed to evaluate positive fluctuations over a longer period, taking into account evolutions over the last 4 rankings. Therefore the following list contains those repositories that improved their positions between January 2011 and July 2012. @mire's clients are highlighted in blue.

2 year trendName
+589University of Waikato Research Commons
+461Kagoshima University Repository
+442Stellenbosch University Scholar Repository
+432Radboud University Repository
+234University of South Africa Institutional Repository
+231University of Waterloo UWSpace
+228Loughborough University Institutional Repository
+219Mospace University of Missouri Repository
+200Roskilde University Digital Archive
+194Victoria University of Wellington Repository
+193Gredos Repositorio Documental Universidad de Salamanca
+192Wichita State University Shocker Open Access Repository
+192Universidad de Talca Dspace
+191Hong Kong University of Science and Technology Institutional Repository
+177Open Universiteit Digital Repository
+173University College Dublin Research Online
+163University of Hertfordshire Research Archive
+143Jyväskylä University Digital Archive
+141Kun Shan University Institutional Repository
+140Vanderbilt University DiscoverArchive
+136University of Canterbury Research Repository
+136RiuNet Repositorio Institucional de la Universidad Politécnica de Valencia
+135Vrije Universiteit Amsterdam Academic Repository
+125Durban University of Technology Repository
+122University of Patras Institutional Repository
+122Universidad de Chile Repositorio Académico
+116Open Access Server of the Woods Hole Scientific Community
+107Cadmus European University Institute Institutional Repository
+107National Institute of Oceanography India Digital Repository
+106Universita degli Studi di Milano Institutional Archive of Research
+106HELIOS Repository National Hellenic Research Foundation
+105Duke University DukeSpace
+103Kansas State University Research Exchange
+103University of Minnesota Digital Conservancy
+102Universidade Federal do Parana Biblioteca Digital de Teses e Dissertações
+99Trinity College University of Dublin Research Archive
+98National Central University (Taiwan) Institutional Repository
+98Indian Statistical Institute Digital Library
+92BADA University College of Boras Academic Digital Archive
+92Brunel University Research Archive
+91University of Wisconsin Digital Repository
+86Université de Liège Open Repository and Bibliography ORBi
+85Massey University Research Online
+84Indiana University Scholarworks
+81Malmo University Electronic Publishing
+81University of Maryland Digital Repository
+79Tartu University Library Dspace
+76DIGITUM Depósito Digital Institucional de la Universidad de Murcia
+75University of Guelph Dspace
+74Université de Montreal Depot Institutionnel Numerique
+73Australian National University Digital Collections
+71National Institute for Technology and Liberal Education Repository
+67University of Sumatera Utara Repository
+65Katholieke Universiteit Leuven Lirias Repository
+64University of Pretoria Institutional Repository
+61Harvard University Digital Access to Scholarship
+60Universiti Malaysia Perlis Library Digital Repository
+59University of Auckland Researchspace
+55King Saud University Repository
+49University of Helsinki HELDA
+47Repositório Aberto Universidade do Porto
+46AMNH Scientific Publications
+44Georgia Tech's Institutional Repository
+44Universitat de Girona DUGiDocs
+42University of Debrecen Electronic Archive
+42University of Manitoba Mspace
+39Repositorio de la Escuela Superior Politécnica del Ecuador
+39University of Johannesburg UJDigiSpace
+35Rice University Scholarship
+35Council for Scientific and Industrial Research Space
+35Queen's University Qspace
+33Universitat Pompeu Fabra Repositorio Digital
+32Leiden University Digital Repository
+32University of Oregon Scholars' Bank
+32Hogeschool West Vlaanderen Dspace
+28Universidad de los Andes Repositorio Institucional
+28Universidad Carlos III de Madrid Archivo Abierto Institucional
+28Lincoln University Research Archive
+27Universidade de Brasília Repository
+22Cranfield University CERES
+22Repositorio Institucional de la Universitat Oberta de Catalunya
+20Dspace University of Victoria Canada
+18Repositorio Universidad Politécnica Salesiana
+18Chia Nan University of Pharmacy & Science Institutional Repository
+18New York University Faculty Digital Archive
+17University of Edinburgh Research Archive
+15University of Illinois at Urbana Champaign Ideals
+15DSpace at Mote Marine Laboratory
+12Universitat Politécnica de Catalunya Upcommons
+12University of British Columbia CIRCLE
+11Digital CSIC
+10Igitur Archive Universiteit Utrecht
+9Universidad de Alicante Repositorio Institucional
+9University of Kansas Scholarworks
+9Raman Research Institute Digital Repository
+5Ohio State University Knowledge Bank
+4MIT Dspace
+3Xiamen University Institutional Repository
+3Aberystwyth University Cadair Repository
+1Flinders University Academic Commons

There are important caveats to consider before you decide to attach any value to these evolutions or to the position of your repository in the ranking in general. First of all, looking at trends over a larger period still does not address the weakness that it is entirely relative to the position of the repository in one particular ranking, in this case, the January 2011 ranking. If your repository was experiencing technical difficulties in January 2011, causing a big drop in that particular ranking, you might look very good in this table of trends if you were able to rectify the technical difficulties in future rankings. On the other hand, if you already had a high position prior to January 2011 that you were able to maintain or slightly improve, your efforts are not reflected in this list.

The detailed list of repositories suffering from large setbacks in the ranking since January 2011 is not included here, but we did evaluate it. Fifteen of the top 20 repositories that lost the most ground were repositories that are based out of Asia. Whether they were incorrectly attributed higher positions in January 2011 or whether they are now suffering from region or language biased adjustments remains a topic of debate.

Contact us if you are interested in more extensive data or recommendations on how to improve search engine exposure for your repository.