There are three differences between the two:

First, the scope of the two is different:

1. Sci: the scope of sci is larger than that of SCIE.

2.SCIE scope: SCIE belongs to the periphery of SCI and is selected from SCI academic journals, so the scope of SCIE is smaller than that of SCI.

Second, the overview of the two is different:

1 overview. SCI: SCI papers are published in journals included in SCI (Science Citation Index). At present, a small number of researchers mistakenly believe that SCI is a periodical, which has been cited by Nanjing University and has become a publication for academic evaluation, rewards and punishments of major universities and scientific research institutions.

2. Overview of SCIE: SCIE(SCI Expanded) is the English abbreviation of SCI, which is an expanded version of the scientific citation index (that is, the online version), mainly including the most influential and important journals in the fields of natural science and engineering technology, including more than 2,000 peripheral journals.

Third, the development of the two is different:

Development of 1 SCI: Citation database 196 1 created and published by institute for scientific information (ISI). SCI (Science Citation Index) and EI (Engineering Index) are the three world-famous retrieval systems for scientific and technological documents, and they are internationally recognized as the main retrieval tools for scientific statistics and scientific evaluation, among which SCI is the most important. SCI was founded by eugene garfield (1925 ~ 20 17).

2.2 development. SCIE: In China, after research by relevant departments and leaders of the Ministry of Science and Technology, it is decided to change the retrieval system of SCI papers statistics into SCIE from the statistical work in 2000. That is to say, if an author's paper is included in SCIE after the 2000 edition, it is even included in SCI, one of the three major retrieval publications.