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Science Citation Index (SCI)


What is the Science Citation Index (SCI)?

The Science Citation Index (SCI) is a pioneering citation index founded by Eugene Garfield in 1964. It was originally produced by the Institute for Scientific Information (ISI). The index is a core resource for tracking scholarly literature in the sciences, medicine, and technology by mapping how research papers cite one another.


Ownership & Historical Timeline

  • 1964: Founded by Eugene Garfield under the Institute for Scientific Information (ISI).

  • 1972: The ISI and its assets, including the SCI, were acquired by Thomson Reuters, becoming part of its Intellectual Property & Science division.

  • 2016: Thomson Reuters sold its scientific division to private equity firms Onex Corporation and Baring Private Equity Asia.

  • 2016-Present: The index became part of the newly formed Clarivate Analytics (later renamed Clarivate in 2021). Clarivate revived the ISI name as one of its operating departments.


Key Product: Science Citation Index Expanded (SCIE)

The primary version in use today is the Science Citation Index Expanded (SCIE).

  • Coverage: It indexes over 6,500 high-quality, peer-reviewed journals across 150 scientific disciplines.

  • Archive: Coverage spans from 1900 to the present.

  • Platforms: The index is accessed primarily through the Web of Science core collection database, as well as other platforms like SciSearch.


Quick Facts: Science Citation Index

 
 
Property Details
Creation 1964
Founder Eugene Garfield
Original Producer Institute for Scientific Information (ISI)
Current Owner Clarivate
Parent Companies Onex Corporation, Baring Private Equity Asia
Headquarters New York, United States
Specialties Science, Medicine, Technology
Primary Platform Web of Science
Website Science Citation Index Expanded

Related Index: Chemistry Citation Index

Eugene Garfield, a chemist by training, also introduced the Chemistry Citation Index.

Launch: First published in 1992 in both print and electronic formats.

Initial Coverage: Focused on 330 core chemistry journals, with partial data from an additional 4,000 journals.

Expansion: By 2002, coverage grew to include 500 fully indexed journals and partial data from 8,000 other related journals.


Importance & Use

The SCI is a fundamental tool for:

Academic Research: Discovering the literature in a field and tracing the development of ideas.

Bibliometric Analysis: Measuring the impact of journals, articles, and researchers through metrics like the Journal Impact Factor (JIF).

Institutional Assessment: Used by universities and funding bodies to evaluate research performance.

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