Interesting

ISI and SCI are both kind of involved with the Web of Science.

ISI used to stand for the Institute for Scientific Information who created the bibliographic database "ISI Web of Knowledge" aka "Web of Science". The ISI was taken over by Thomson and is now know as Thomson Scientific.

The SCI is the Science Citation Index which is a part of the Web of Science.

I guess some people still use the label ISI instead of SCI but they probably mean the same.

As Andrea says, ISI is a multidiscinplinary database made by Thompson Reuters.

SCI (Science Citation Index) is the database used to consult the impact factor of a journal. Is also made by Thompson Reuters. 

Thank you Andreas and Maria, but even some SCI journals do not have impact factor ?

Thanks

I understood from the answers  (if not mistaken) that SCI replaced ISI. What is their relationship with SJR? Is SJR also Thompson Reuters?

Thanks for the help

SCI is the database index from Web of Science (Thomson Reuters) while SJR is Scientific Journal Rank from Scopus., both are different indexes.

Hello!

Wikipedia says "The Institute for Scientific Information (ISI) was founded by Eugene Garfield in 1960. It was acquired by Thomson Scientific & Healthcare in 1992, and became known as Thomson ISI. It was a part of the Intellectual Property & Science business of Thomson Reuters until 2016, when the IP & Science business was sold, becoming Clarivate Analytics."

Also, "the Science Citation Index (SCI) is a citation index originally produced by the Institute for Scientific Information (ISI)."

"The calculation of the SJR indicator is very similar to the Eigenfactor score, with the former being based on the Scopus (Elsevier) database and the latter on the Web of Science (ISI, Clarivate Analytics) database."

i think it is the same company, may be the isi is old indexing and sci the new version of iy

Based on my above posting... sci is under isi.

SCI is SCIE are one and the same. only difference is with the data base management. SCI available in CD/DVD format and SCIE available online.

very informative thanks

Thanks every one for the valuable knowledge

But what is "ISI Science Citation Index"

Some journals are listed in ISI Science Citation Index. The link of journal listed in above said indexing given below

https://www.elsevier.com/journals/neuroimage/1053-8119/abstracting-indexing

Institute of Scientific Information (ISI)

Science Citation Index (SCI)

Supplemental information:

The quartile ranking method is based on the Impact Factors (IF) of publications from Science Citation Index (SCI) database. This ranking is published by the Journal Citation Reports (JCR) every year.

In which, Q1 denotes the top 25% of the IF distribution, Q2 for middle-high position (between top 50% and top 25%), Q3 middle-low position (top 75% to top 50%), and Q4 the lowest position (bottom 25% of the IF distribution).

A question was raised 2 weeks ago how SCI was used in evaluation of research proposal and classification of academics. The responses indicated an increasing importance of for these purposes.

https://www.researchgate.net/post/How_much_is_the_Science_Citation_Index_SCI_database_used_in_national_evaluation_of_research_proposals

Science Citation Index (SCI)

International Scientific Indexing (ISI)

I think the both are same, and maybe the only difference is in the journals sorting method!!!

Hi

Can you please have a look at the following journal:

http://cjcmr.org/

It has included in its website an ISI indexed journal and then I clicked on it it has certificate. When I checked this journal whether it is indexed in scopus and/or web of science or ISI (Thomson ISI) and SJR website , it is not there.

Publsihers of the new journals adding such certification claiming ISI indexed, which actually is not that we understand as a very high quality journal, in my opinion misleads me .

Thanks

Indeed this is a valuable question. I will answer it for sure. ISI is old company acquired by Thomson Reuters (now Clarivate Analytics). And SCI is the index ISI developed. Now SCI is property of Clarivate Analytics. Currently, I authored and article titled "Not-for-Profit Top 10 Academic Journal Quality/Ranking Lists". You can find it here: http://scholarsindex.com/articles/not-for-profit-top-10-academic-journal-qualityranking-lists

It is common among academic professionals to check listing/ranking of academic journals in recognized journal ranking/quality lists before submitting their articles to an academic journal. Professional research evaluation committees also frequently use such quality journal lists. Although, many scholars consider indexing/abstracting databases like SSCI, SCI, Scopus, Inspec, MEDLINE etc. but this article will focus on the academic journal quality/ranking lists developed by various countries/institutions. I will only provide journal quality lists/rankings developed by not-for-profit organizations because products developed by for-profit companies always reflect some degree of bias. Therefore, I will exclude the lists/rankings like Thomson Reuters/Clarivate Analytics Journal Ranking, Cabell’s Journals list, SCImago journal ranking (although it is free but is based on for-profit database Scopus) etc.

There are various academic journal ranking lists available in the market. For instance, Google Scholar provides a free list of 100 top multidisciplinary publications. This list is based on h5-index. Publications having higher h5-index are ranked higher. This list may be useful for scholars but has a very limited scope because it is not possible for every research scholar to publish in these top 100 publications. Secondly, this list excludes (or journals in these areas may not have reached to the desired h5-index value) many science and art areas for example, fine arts, music, astronomy, business, management etc. Similarly, Financial Times also calculates academic journal rankings and provides top 50 academic journal list for free. Again, the scope of this list is very limited because it only provides 50 journals in the areas of management and business. Hence, FT journal list is not very useful for scholars as a whole just like Google Scholar’s top publication list. The French Foundation for Management Education (FNEGE), University of Sydney Business School, and Australian Research Council (ARC) Excellence in Research for Australia (ERA) also maintain their journal quality lists. In addition, AERES, CNRS, and Qualis journal quality/ranking lists are also used in France, and Brazil. However, these lists are not able to gain international popularity.

Science Citation Index (SCI)

International Scientific Indexing (ISI)

Respected Dear Dr. Arshad Ali,

I am totally agree with the beat explanation answers of Dr. Andreas Meier, John Ryan, Olave Bjarte.

Kind regards,

Naseer Almukhtar

Hi. ISI means former Institute of Scientific Information which was actual owner of Web of Science. ISI was acquired by Thomson Reuters few years back. Now there is no ISI. SCI is a database called Science Citation Index maintained by Thomson Reuters. Note that now Thomson Reuters in called Clarivate Analytics. Also note that ISI- International Scientific Indexing is a fake matric company.

Thank you very much Dr Ch. Mahmood Anwar for the valuable information.

Dear Arshad Ali Shedayi,

Please, have a look at provided link:

https://www.quora.com/What-is-the-difference-between-ISI-and-SCI-journals

Thank you very much Dr Ch. Mahmood Anwar for the valuable and good information.

https://www.researchgate.net/post/What_is_Web_of_Knowledge_WoK_or_Web_of_Science_WoS_What_is_difference_between_ISI_SCI_and_SCOPUS_journals

Interesting

Science Citation Index (SCI) , and also there the larger version Science Citation Index Expanded.

International Scientific Indexing (ISI) .

makes sense the above explaination

Thanks @ Ch. Mahmood Anwar for providing useful information

ISI was sold to Thomson in the 1990s, who then merged with Reuters to become Thomson Reuters. Recently, Thomson Reuters sold their science division to Clarivate. So ISI no longer exists, though their SCI continues.

https://predatoryjournals.com/metrics/#U

Science Citation Index (SCI)

Institute of Scientific Information(ISI)...ranking through SCI.

ISI >SCI>Q1,Q2,Q3,,,,,,,,

I follow answers

best regards

Dear Arshad Ali Shedayi

Please also have a look at this useful link.

https://www.quora.com/What-is-the-difference-between-ISI-and-SCI-journals

Good luck!

Colloquially, they are the same. ISI was the Institute of Scientific Information, founded in the 1960s by Eugene Garfield. They created the Science Citation Index (SCI), which is used to calculate the Impact Factor.

The SCI is part of the wider Web of Knowledge, which includes other indexes including the newer eSCI (Emerging Sources Citation Index).

ISI was sold to Thomson in the 1990s, who then merged with Reuters to become Thomson Reuters. Recently, Thomson Reuters sold their science division to Clarivate. So ISI no longer exists, though their SCI continues.

SCI and ISI Web of Knowledge are different citation databases which most universities subscribe to, for the scholars to make the most of their publications needed for their research. Its hard to find out the difference but the similarity would be that they all have the same aim/purpose to cater to the users.

ISI was created by Eugene Garfield in 1960s and also created the Science Citation Index (SCI), which is used to calculate the Impact Factor.

The SCI is part of the wider Web of Knowledge, which includes other indexes including the newer eSCI (Emerging Sources Citation Index).

ISI was sold to Thomson in the 1990s, who then merged with Reuters to become Thomson Reuters. Recently, Thomson Reuters sold their science division to Clarivate. So ISI no longer exists, though their SCI continues.

Also, for future referring to this question and more information about Journal Citation Report (JCR) and a wide range of journals with good reputation,

Please try to refer to this link, it contains uploaded Journal Citation Report (JCR) 2017 and 2018

https://www.researchgate.net/post/How_can_I_get_the_Impact_factor_of_a_journal

Good Luck

Samaa

They are both important for publishing.

SCI is Science Citation Index and ISI is International Scientific Indexing.

With greetings.

ISI was the Institute of Scientific Information, founded in the 1960s by Eugene Garfield. They created the Science Citation Index (SCI), which is used to calculate the Impact Factor.

The SCI is part of the wider Web of Knowledge, which includes other indexes including the newer eSCI (Emerging Sources Citation Index).

Great discussion!

Eugene Garfield established the Institute for Scientific Information (ISI) in 1960. The Science Citation Index (SCI) was the first product of ISI. In SCI, the bibliographic information is indexed in such a way that one can search for specific articles by subject, author, source title, or geographical location or organization of the authors. Thomson Reuters acquired ISI, and it was so until 2016, when they sold the Intellectual Property & Science Business to Clarivate Analytics. A larger web based version of Science Citation Index is now available with many easy to use features, the Science Citation Index Expanded. Presently, it is accessible through the Web of Science (WoS) collection of indexes (Earlier, WoS was part of Web of knowledge). At present, only WoS is available not WoK.

well, there is no isi nowdays!!!!!!!!!!!!!!!!

it is same but ISI before the change name for SCI clarivate analytic

Please note that last year (beginning of 2018), Clarivate Analytics reestablished ISI as part of their Scientific and Academic Research Group.

International Scientific Indexing (ISI) , Science Citation Index (SCI)

. Following to learn ...

interesting question...

Eugene Garfield established the Institute for Scientific Information (ISI) in 1960. The Science Citation Index (SCI) was the first product of ISI. In SCI, the bibliographic information is indexed in such a way that one can search for specific articles by subject, author, source title, or geographical location or organization of the authors. Thomson Reuters acquired ISI, and it was so until 2016, when they sold the Intellectual Property & Science Business to Clarivate Analytics. A larger web based version of Science Citation Index is now available with many easy to use features, the Science Citation Index Expanded. Presently, it is accessible through the Web of Science (WoS) collection of indexes (Earlier, WoS was part of Web of knowledge). At present, only WoS is available not WoK.

ISI is not used officially anymore. However, you can consider SCI as a subcategory of ISI.

Following to learn

There is no more ISI after 2016. The web of science (WoS) is now being used for checking the value of journals beside the Scopus-indexing. Actually, the scientific community needs a better international index.

Regards

IS I was included sci : science citation index , SCI expanded .

But IS I sold to clarivate and Is I is not used anymore.

Sci , SCI expanded is the rank of journal. Sci is higher than expanded.

clarivate analytic my used instead of ISI which is no more

clarivate analytic is used to know the indexing of the journal by its title or ISSN

SCI/SCOPUS/WEB of SCIENCE

Where to publish your Research?

Which among them has more acceptability?

ISI is Institute for Scientific Information but it's no more in use. Web of Science (Clarivate Analytic) is used to search the world's leading scholarly journals, proceedings and books in the fields of science and engineering, social science, and art and humanities.

Web of science journals are highly ranked compare with Scopus journals, and the quality of journals indexed in clarivate analytic can be assessed using their rank in quartile (Q1, Q2, Q3 and Q4). The Q1 Journals are the most highly ranked journals while the least is Q4. However, all journals indexed in Web of Science are in Scopus but not all Scopus journals are in Web of Science.

@Tanweer Jalal, you can use this piece to decide where to publish your articles.

All these confusion is because of acquisitions and mergers of companies. As I mentioned in an earlier mail, the Institute for Scientific Information (ISI) established in 1960 was the first company, which produced the Science Citation Index (SCI). In 1992, another company, Thomson Reuters acquired ISI, but they sold the ISI and intellectual business to Clarivate Analytics in 2016. To add more confusion who are unaware of these mergers, please note that last year (beginning of 2018), Clarivate Analytics reestablished ISI as part of their Scientific and Academic Research Group!

Nicely explained.

In simple terms, ISI has been acquired by Clarivate Analytics.

SCI and SCIE is more acceptable than Web of Science.

Deleted research item The research item mentioned here has been deleted

Both of them same

I have papers in SCI with impact factor 0.7 and ISI with impact factor 2.9 which one is better and why.

It's clear to me now; thanks dear scholars.

(SCI): Science Citation Index

(ISI): International Scientific Indexing

Interesting

ISI is abbreviations for international Scientific indexing

SCI is abbreviations for science citation index

Both of them they do have journal with reviewed articles at least by two reviewers .

BIG WARNING!!!

As said by others:

ISI (Institute for Scientific Information) is the company acquired by Thomson Reuters (now Clarivate Analytics). SCI (Science Citation Index) is the index ISI originally developed. Nowadays SCI is property of Clarivate Analytics.

See also:

https://en.wikipedia.org/wiki/Institute_for_Scientific_Information

But the big warning is as said by Kay Smarsly :

The International Scientific Index (ISI) is a fake service (metrics/indexing):

https://isindexing.com/isi/index.php

See for more info:

https://predatoryjournals.com/metrics/

The international Scientific Index tries to mislead researchers by using the historically trustworthy ISI term.

PS. Dear @Kapil Bhatt. The one with the SCI impact is correct.