Quantitative analysis of journals is a way traditional peer review may be augmented to gain a more complete picture of a scholar's impact in his chosen field. Three measures can be used:
Knowing the impact or importance of the journal can help in decisions about where an author will choose to submit an article. Libraries and librarians also use journal rankings to make decisions about collection development.
The established source for journal rankings is Journal Citation Reports, a database that can be accessed through Web of Science or Web of Knowledge. Journals may be searched by individual title, by date, or by subject category. In contrast to Eigenfactor, journals may belong to more than one category. Go to the Impact Factor & Journal Citation Reports page for instructions on extracting journal rankings information from this source.
In addition to Journal Citation Reports, there are some other sources for journal rankings. These are listed in a page entitled Alternative Sources for Journal Rankings under the Journal Rankings tab on this LibGuide.
Because impact factors vary among disciplines, one cannot meaningfully compare two journals in different disciplines using impact factors. For this reason, it is helpful to see how a journal ranks based on other journals in the subject category. First find the journal to see what discipline or subject category/categories it falls within. Then find the total number of journals in the subject area. Subtract the ranking of the journal from the total number of journals and divide by the number of journals in the subject area minus 1. Thus you will find the percentile ranking.
n=number of journals in the subject category
n-rank/n-1 x 100 =percentile
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