What is the difference between Emerging Sources Citation Index (ESCI) and Science Citation Index (SCI)? Does ESCI also have an Impact Factor like SCI?
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The SCIE covers over 8,850 major journals across more than 170 disciplines. Includes the Science Citation Index (SCI) while the ESCI Covers over 5000 journals that selected and reviewed but haven't received its first impact factor yet.
Science Citation Index Expanded (SCIE): A list of master journals by Clavariate Analytics (indexed by Thomson Reuters). These journals are evaluated for calculating impact factors every year based on total citations received in a two/five year paper published divided by the total number of the research papers published.
Emerging Sources Citation Index (ESCI): A new type of list in which journals who applied for SCIE gets listed initially while the evaluation is going on. However, there is no indexing of papers in Thomson Reuters and also no impact factor is calculated for such journals.
Thus, paper accepted for an ESCI listed journal is a good thing but not as good as in SCIE.
The Emerging Sources Citation Index is a citation index produced since 2015 by Thomson Reuters, and now by Clarivate Analytics. SCI has non zero impact factor but SCIE journals are just ranked for impact factor. Both SCI and SCIE are available online. However, SCI is available on CD/DVD format but SCIE is not.
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