Monday, February 7, 2011

The best universities in the world

The "Webometrics Ranking of World Universities" is an initiative of the Cybermetrics Lab, a research group belonging to the Consejo Superior de Investigaciones Cientнficas (CSIC), the largest public research body in Spain.


Spanish Research Council main building CSIC is among the first basic research organizations in Europe. The CSIC consisted in 2006 of 126 centers and institutes distributed throughout Spain.

CSIC is attached to the Ministry of Education and its main objective is to promote scientific research as to improve the progress of the scientific and technological level of the country which will contribute to increase the welfare of the citizens.
CSIC also plays an important role in the formation of new researchers and technicians in the different aspects of the science and the technology.

The organization collaborates with other institutions of the Spanish R&D system (universities, autonomous governs, other public and private research organisms) and with social, economic, national or foreign agents to which contributes with its research capacity and human and material resources in the development of research projects or under the form of consultancy and scientific and technical support. CSIC was founded in 1939 from a previous body, the Junta para la Ampliaciуn de Estudios e Investigaciones Cientнficas created in 1907 under the leadership of the Spanish Nobel Prize Prof. Ramón y Cajal.

Objectives of the Webometrics Ranking of World's Universities

The original aim of the Ranking was to promote Web publication. Supporting Open Access initiatives, electronic access to scientific publications and to other academic material are our primary targets. However web indicators are very useful for ranking purposes too as they are not based on number of visits or page design but on the global performance and visibility of the universities.


As other rankings focused only on a few relevant aspects, specially research results, web indicators based ranking reflects better the whole picture, as many other activities of professors and researchers are showed by their web presence.

The Web covers not only only formal (e-journals, repositories) but also informal scholarly communication. Web publication is cheaper, maintaining the high standards of quality of peer review processes. It could also reach much larger potential audiences, offering access to scientific knowledge to researchers and institutions located in developing countries and also to third parties (economic, industrial, political or cultural stakeholders) in their own community.

The Webometrics ranking has a larger coverage than other similar rankings (see table below). The ranking is not only focused on research results but also in other indicators which may reflect better the global quality of the scholar and research institutions worldwide.

We intend to motivate both institutions and scholars to have a web presence that reflect accurately their activities. If the web performance of an institution is below the expected position according to their academic excellence, university authorities should reconsider their web policy, promoting substantial increases of the volume and quality of their electronic publications.

Candidate students should use additional criteria if they are trying to choose university. webometrics Ranking correlates well with quality of education provided and academic prestige, but other non-academic variables need to be taken into account.

Comparison of the main World Universities' Rankings


Coverage of the Webometrics Ranking of World Universities

This table summarize the actual coverage of the Ranking, in terms of number of countries and higher education institutions around the world.


Region/Countries
Top100 Top 200 Top 500 Top 1000 TOTAL
North America 7 73 115 198 336 3484
    USA
66 99 174 298 3274
    Canada   7 16 24 38 204
Europe 54 15 59 220 414 5069
    United Kingdom
7 10 36 70 233
    Germany
1 14 48 63 411
    Sweden
1 5 10 14 50
    Italy
1 4 18 38 203
    Netherlands
1 4 9 13 161
    Switzerland
1 4 7 10 107
    Spain

3 24 43 236
    France


12 36 581
Asia 34 7 16 47 148 6176
    Taiwan
4 6 14 35 157
    Japan
2 7 14 50 716
    Singapore
1 1 2 2 18
    China/Hong Kong

2 11 25 1182
    South Korea


2 12 398
Oceania 12 3 6 16 35 154
    Australia
3 6 14 28 91
Latinamerica 34 2 4 16 59 3392
    Brazil
1 3 11 33 1379
    Mexico
1 1 1 6 906
Africa 38     2 5 397
Arab World 22

1 3 594
  201         19266


Design and Weighting of Indicators

The unit for analysis is the institutional domain, so only universities and research centres with an independent web domain are considered. If an institution has more than one main domain, two or more entries are used with the different addresses.

The first Web indicator, Web Impact Factor (WIF), was based on link analysis that combines the number of external inlinks and the number of pages of the website, a ratio of 1:1 between visibility and size. This ratio is used for the ranking, adding two new indicators to the size component: Number of documents, measured from the number of rich files in a web domain, and number of publications being collected by Google Scholar database.

Four indicators were obtained from the quantitative results provided by the main search engines as follows:
Size (S). Number of pages recovered from four engines: Google, Yahoo, Live Search and Exalead.
Visibility (V). The total number of unique external links received (inlinks) by a site can be only confidently obtained from Yahoo Search.
Rich Files (R). After evaluation of their relevance to academic and publication activities and considering the volume of the different file formats, the following were selected: Adobe Acrobat (.pdf), Adobe PostScript (.ps), Microsoft Word (.doc) and Microsoft Powerpoint (.ppt). These data were extracted using Google, Yahoo Search, Live Search and Exalead.
Scholar (Sc). Google Scholar provides the number of papers and citations for each academic domain. These results from the Scholar database represent papers, reports and other academic items.
The four ranks were combined according to a formula where each one has a different weight but maintaining the ratio 1:1:


The inclusion of the total number of pages is based on the recognition of a new global market for academic information, so the web is the adequate platform for the internationalization of the institutions. A strong and detailed web presence providing exact descriptions of the structure and activities of the university can attract new students and scholars worldwide.

The number of external inlinks received by a domain is a measure that represents visibility and impact of the published material, and although there is a great diversity of motivations for linking, a significant fraction works in a similar way as bibliographic citation.

The success of self-archiving and other repositories related initiatives can be roughly represented from rich file and Scholar data. The huge numbers involved with the pdf and doc formats means that not only administrative reports and bureaucratic forms are involved. PostScript and Powerpoint files are clearly related to academic activities.



















































Source -http://www.webometrics.info

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