International Society for Indexing (ISI) is an international indexing service which provides indexing and citation calculation services to all fields of journals. Scientific Citation Indexing (SCI) provides the Impact factor to the Journals, which may be used to differ among various Journals with respect to their status, prestige and importance mainly based on the citations of their research articles.
SCI Impact Factor of Journal is computed on the basis of the following criterias:
- Citation Score:
Scientific Citation Indexing (SCI) computes the citation score by the average number of citations received per paper published in that Journal during the last two previous proceedings for a given period (Yearly/Half- yearly/ Quarterly/Monthly).
For example, if a journal has an impact factor of 3 in 2008, then its papers published in 2006 and 2007 received 3 citations each on average in 2008. The 2008 impact factor of a journal would be calculated as follows:
2008 impact factor = X/Y.
X = the number of times that all items published in that journal in 2006 and 2007 were cited by indexed publications during 2008.
Y = the total number of “citable items” published by that journal in 2006 and 2007. (“Citable items” for this calculation are usually articles, reviews, proceedings, or notes; not editorials or letters to the editor).
- Editorial Quality Score
- The Editorial and reviewer board members should be demographically more dispersed and qualified. The articles published in the journal after blind peer review process would carry more marks.
- The leading element of editorial quality is the uniform composition of presented manuscripts and adherence to a journal’s instruction for its authors.
- Acceptance rate of the Journal.
- Publication Quality Score
- The Journal should be consistent in publications, regularity, and timelines.
- The presence of Journal’s in other indexing services, directories and listings.
- Articles should not be plagiarized, if articles published in a Journal found to be plagiarized then that would surely reduce the score in the Quality of Publication section.
- Manuscript Quality Score
Quality of the manuscript would be measures by looking at the correct page numbers in the Journal, if Journal is found to have missing page numbers then that would reduce the score in manuscript quality section. Another important factors are:
Articles published in the Journal should not have grammatical errors.
Formatting of the papers in the Journal should be uniform and consistent throughout the Journal.
- Checking and Ensuring tables, figures, references, etc. cited in text
- Ensuring that there are no duplicate tables and figure titles
- Checking format for bibliographic references, i.e. according to any of Citation Style. References in the Journal should be complete and follow a strict uniform style.
- Choosing correct size and layout of pages.
- Ensuring consistent use of capitalization and spelling.
- Presentation Quality Score
- Journal website design. i.e. ease of use, ease of access, online submission, payment methods. In case of print only then quality of printed version of journal, regularity of article publishing, back issue viewing.
- Quality of Cover page [all the following items should appear clearly: title, ISSN, frequency, volume/issue/part number, month/year etc.,].
- Detailed editorial and author guidelines information regarding manuscript preparation
- Editorial information should include a list of Editorial Board members, editorial correspondence addresses, the name and address of the publisher, ISSN and frequency of issuance (monthly, quarterly, bi annual, annual etc.).
Overall SCI Impact Factor is computed by aggregating the score of each factor as follows:
|S. No||Factor||Excellent||Very Good||Good||Fine||Poor||Very Poor|
|1||Editorial Quality Score (A)||250||187.5||150||125||100||0|
|2||Publication Quality Score (B)||250||187.5||150||125||100||0|
|3||Manuscript Quality Score (C)||250||187.5||150||125||100||0|
|4||Presentation Quality Score (D)||250||187.5||150||125||100||0|
Final SCI Impact Factor is computed as
SCI Impact Factor = Citation Score + [(A+B+C+D)/ 1000]