The Evaluation of the Impact Factor of the Journal Interdisciplinary Description of Complex Systems
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The Science Citation Index (SCI®) was first presented in Science in 1955. The
Science Citation Index was launched in 1964 and the Annual SCI Journal Citation Reports
were officially launched in 1975. The SCI’s multidisciplinary database has two purposes:
first, to identify what each scientist has published, and second, where and how often the
papers by that scientist are cited. Hence, the SCI has always been divided into two author-
based parts: the Source Author Index and the Citation Index. The Web of Science®
(WoS)—the SCI’s electronic version—links these two functions: an author’s publication
can be listed by chronology, by journal, or by citation frequency. The impact factor was
devised by Eugene Garfield: in any given year, the impact factor of a journal is the number
of citations, received in that year, of articles published in that journal during the two
preceding years, divided by the total number of articles published in that journal during the
two preceding years. The Science Citation Index (SCI®) was first presented in Science in 1955. The
Science Citation Index was launched in 1964 and the Annual SCI Journal Citation Reports
were officially launched in 1975. The SCI’s multidisciplinary database has two purposes:
first, to identify what each scientist has published, and second, where and how often the
papers by that scientist are cited. Hence, the SCI has always been divided into two author-
based parts: the Source Author Index and the Citation Index. The Web of Science®
(WoS)—the SCI’s electronic version—links these two functions: an author’s publication
can be listed by chronology, by journal, or by citation frequency. The impact factor was
devised by Eugene Garfield: in any given year, the impact factor of a journal is the number
of citations, received in that year, of articles published in that journal during the two
preceding years, divided by the total number of articles published in that journal during the
two preceding years.