Emerging source citation index ESCI
Science citation index SCI
Science citation index Expanded SCIE
Dear professor,
I dont want the expansion. I need the difference. Thank you for your post
SCIE: Science Citation Index Expanded
A list of top notch journals by Clavariate Analytics (indexed by Thomson Reuters). These journals are evaluated for calculating impact factor every year based on citations, published papers, reach of the papers etc.
ESCI: Emerging Sources Citation Index
A new type of list in which journals who applied for SCIE gets listed initially while the evaluation is going on. And journals of local importance also gets included in this list. But there is no indexing of papers in Thomson Reuters and also no impact factor is calculated for such journals.
ESCI IS THE SUBSET OF SCI AND IS A PART OF CLARIVATE ANALYTICS INDEX BY THOMSON REUTER .
They are all on clarivate...the SCI is the best indexing followed by SCIE and then ESCI. This is to say...with time ESCI can be promoted to SCIE and ultimately SCI which is the best one.
This is what Clarivate Analytics says, "The Science Citation Index (SCI) is a highly selective subset of journals found in the Science Citation Index Expanded. Journals in SCI are typically the most consistently high impact titles in many scientific disciplines."
"Emerging Sources Citation Index provides Web of Science Core Collection users with expanded options to discover new areas of research in evolving disciplines, as well as relevant interdisciplinary scholarly content across rapidly changing research fields... These titles are also being evaluated on a continual basis for inclusion in the SCIE, SSCI, and AHCI."
(http://mjl.clarivate.com/#journal_lists and http://info.clarivate.com/ESCI)
From these excerpts, it seems that with respect to the way they measure impact, Clarivate would probably put SCI journals at the top, SCIE journals that are not also in SCI in the middle, and ESCI journals in third place, although they don't say this directly. My own view based on my field (law) is that some of the journals in the ESCI are much more well-regarded (and more impactful) than some in the SSCI. I would caution against using these indices as your sole criteria to determine quality. Nothing replaces reading the journals and asking your colleagues and experts in your field about them.
Thanks for your contribution. I think the explanations given here are quite helpful for the new researchers.
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