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« PLoS Open: an Open Access alternative to Science and Nature? | Main | Buy a Book...Help the Library! »

July 6, 2006

2005 Journal Citation Reports Available

The Journal Citation Report for 2005 is now available.
http://www.library.uiuc.edu/orr/get.php?instid=258273

Among other things, this report gives the ISI Impact Factor for 6088 science journals and 1747 social science journals. You may search by journal title, publisher, subject category, or country.

The Impact Factor (IF) of a journal is often taken as a measure of the "worth" of a journal; the higher the impact factor, the more prestigious the journal. Journal publishers and editors are often very interested in IFs, and tout their journal's IF if it is high. Those going up for tenure / promotion are also interested in publishing in journals with high impact factors.

How the Impact Factor is Calculated:
The impact factor is calculated by dividing the number of citations in the JCR year by the total number of articles published in the two previous years. An impact factor of 1.0 means that, on average, the articles published one or two year ago have been cited one time. An impact factor of 2.5 means that, on average, the articles published one or two year ago have been cited two and a half times. Citing articles may be from the same journal; most citing articles are from different journals. Caveat: only citations from journals indexed within the ISI database are counted.

For example, searching by publisher, I found the following 25 titles from the open access publisher, BioMed Central.

GENOME BIOL 9.712
BMC DEV BIOL 5.412
BMC STRUCT BIOL 5.000
BMC BIOINFORMATICS 4.958
BMC MOL BIOL 4.485
BMC EVOL BIOL 4.447
BMC GENOMICS 4.092
BREAST CANCER RES 4.026
GEOCHEM T 3.727
BMC BIOTECHNOL 3.054
ARTHRITIS RES THER 2.965
CRIT CARE 2.932
BMC NEUROSCI 2.733
RESP RES 2.682
BMC CELL BIOL 2.652
BMC MICROBIOL 2.176
BMC CANCER 1.992
BMC INFECT DIS 1.956
BMC GENET 1.769
BMC PUBLIC HEALTH 1.658
BMC HEALTH SERV RES 1.625
BMC GASTROENTEROL 1.455
BMC MUSCULOSKEL DIS 1.316
MALARIA J 0.547 0.377
CURR CONTR TRIALS C 0.231

Usually journals are compared within a particular subject category. For example, Genome Biology is listed in the BIOTECHNOLOGY & APPLIED MICROBIOLOGY category as well as the GENETICS & HEREDITY category. In the BIOTECHNOLOGY & APPLIED MICROBIOLOGY category, Genome Biology has the 4th highest IF out of 139 journals; in the GENETICS & HEREDITY category, it is 10th out of 124.

Enjoy!

Posted by Katie Newman at July 6, 2006 10:36 AM