|Field||Papers||Cites||Cites/paper||Cites/paper world average||% +/–|
The table above lists fields in which Caltech contributed 100 or more research articles or reviews in the journals indexed by Thomson Reuters for its Essential Science Indicators database during the period January 2000 through February 2010. The fields are ranked by relative citation impact, here citations per paper for Caltech in a field compared with citations per paper for the world in the same field. Given the institution’s reputation, it is not surprising to find that in all fields, Caltech’s performance was above the world average – far above, in fact.
With the exception of environment/ecology, ranked first but exhibiting a relatively small paper count, Caltech’s strongest fields represent the physical sciences. The biological sciences appear in the lower half of the table, with the exception of mathematics. However, even Caltech’s lowest ranking field – microbiology – earned it a place in the top 60 institutions worldwide when assessed by relative impact in this area.
Caltech is a classic example of how measures of output and total citations, which are strongly related to output, can be inadequate in revealing excellence in research performance. For small but elite institutions, one must examine the weighted citation impact measure.
For more information on the Thomson Reuters Essential Science Indicators database, see: http://science.thomsonreuters.com/products/esi