While Japan’s production of natural science papers continues to fall, a relatively high proportion of its output is of high quality. The country ranked 4th among the top countries in the Nature Index when assessed on its authorship of papers in the index relative to its contribution to the Scopus database, 2012-2017. Some of Japan’s smaller institutions stand out for their efficiency in producing high-quality science.
Nature 555, S54-S55 (2018)
Data analysis by Aaron Ballagh, Bo Wu and Willem Sijp of the Nature Index; and Kana Takasaka and Anders Karlsson at Elsevier.
The Nature Index database tracks the affiliations of high-quality natural science articles, and charts publication productivity for institutions and countries. Article count (AC) includes the total number of affiliated articles. Weighted fractional count (WFC) accounts for the relative contribution of each author to an article, and adjusts for the abundance of astronomy and astrophysics papers. More details here.