The Scientific business of Thomson Reuters has announced that it has enhanced the Journal Citation Reports, available to subscribers of the JCR Web. The recognised authority for evaluating journals, JCR presents quantitative data that supports a systematic, objective review of the world's leading journals and their impact and influence in the global research community.
In addition to Impact Factor, the JCR now includes the Eigenfactor Metrics, which use citing journal data from the entire JCR file to reflect the prestige and citation influence of journals by considering scholarly literature as a network of journal-to-journal relationships.
The JCR summarises citations from more than 10,000 journals and proceedings in the sciences and social sciences indexed in the Web of Science database. Nearly 8,000 journals appear in the 2007 JCR, with detailed reports of their citation performance, their citation network, and the count and type of materials published.
In addition to the collaboration with the University of Washington to include Eigenfactor Metrics, the Journal Citation Reports now include features such as five-year impact factor providing a broader range of citation activity for a more informative snapshot over time; Journal 'Self Citations'; graphic displays of Impact Factor 'Box Plots'; and Rank-in-Category tables for journals covering multiple disciplines. The JCR includes virtually all subject specialties in science, technology, and the social sciences as well as more than 1,400 publishers from 66 nations.
