抄録
Since 2001 the author has been compiling university rankings for “The University Rankings,” an annual publication by the Asahi Shimbun Company, based on statistical surveys on the ISI citation databases of Thomson Scientific. In this report, the historical developments in these 6 years are reviewed, and a new method of calculating number of papers and citations introduced for the 2006 edition is described with some related problems which are involved in these bibliometric statistics.
