January 2016 Edition: Updated annually

        Due to our limited resources we decided to update the Ranking Web (Webometrics) of Research Centers only one time a year (in late January).

        This is the 2016 edition that covers about 8 000 research centers worldwide. To calculate the composite index (World Ranking) we have combined normalized values, the ranks are showed for informative purposes. The indicators used and their weighting are described below: