Science Citation Index


July 6, 2022

The Science Citation Index (SCI®) is a citation index created by ISI in the United States in 1960. It is now owned by Clarivate Analytics. There is an online version of SCI (Science Citation Index Expanded), which contains 3,768 SCI journals and 8,060 SCIE journals as of 2009. However, the journals are mainly in English. The Ministry of Education, Science and Technology of the Republic of Korea counts the number of “SCI-level papers” when evaluating the research ability of each university. ) and includes SCOPUS in a broad sense. On January 3, 2020, SCI will be officially integrated into SCIE, and only SCIE will be provided.

Basic Philosophy

A relatively small number of core journals have a greater impact on science overall than a large number of miscellaneous general journals. Most important papers are published only in a limited number of journals. To this end, only top 10% of the top 10% of journals are listed.

SCI Journal Selection Method and Procedure

The selection of SCI journals is decided by ISI's Editorial Board, and it consists of experts by subject selected from within ISI, and librarians, information experts, subscribers, authors and editors commissioned from outside ISI. SCI journals are selected based on the following three factors: expert judgment Compliance with journal standards The evaluation factors of the journals covered by the numerical SCI of the citation analysis data are as follows: Must be issued regularly Comply with the international editorial regulations of the journal, such as complete journal name, paper name, abstract, complete bibliographic information of References, and addresses of all authors There must be at least the title of the paper, abstract, keywords, and references in English (the text of the paper does not have to be in English) There must be a review process regarding the relevance of the submitted thesis, research method, originality, and references. Research performance of reviewers and authors of submitted papers: number of papers, submitted journal, number of citations, etc. The reviewers and authors of the submitted papers should have regional representation. The subject field of the journal must be an academic field that many researchers research Expert critique of the scientific nature, originality, importance, and academic contribution of research Publisher's reputation

Number of Citations in Papers

A general book evaluates the value of a book by counting the number of copies sold. However, the value of a paper is evaluated according to the number of times the paper is cited and commented in other papers, i.e., the number of citations, rather than a method of counting the number of copies sold at bookstores. In other words, a book is a best-selling book, but for a thesis, it is recognized that the best citation thesis is the best. In general, scholars read 200 papers per year. A Nobel Prize winner usually has more than 5,000 citations in his/her lifetime published papers. Korea has been selected as a National Star Faculty and is providing intensive support to top-level scientists who have been cited more than 1,000 times. The number is as follows: Professor Kim Jin-eui, Department of Physics, Seoul National University 7,915 times Jae-Young Ko, Professor, Department of Biology, University of Ulsan 4,565 times Younghee Lee, Professor, Department of Physics, Sungkyunkwan University The 4,156 SCI selects only magazines from around the world with constant quality and number of citations. In addition, the total number of citations is counted for both the papers and authors published here and for each author. Of course, the cited papers are also published in the SCI journal.