Scientific Citation Index (SCI), institute for scientific information, USA (? Eugene garfield, ISI), founded the citation database in Philadelphia, USA on 1957.
SCI (Science Citation Index), EI (Engineering Index) and ISTP (Science and Technology Conference Index) are three world-famous retrieval systems for scientific documents, which are internationally recognized as the main retrieval tools for scientific statistics and scientific evaluation.
In February 2020, the Ministry of Education and the Ministry of Science and Technology issued "Several Opinions on Standardizing the Use of Relevant Indicators of SCI Papers in Colleges and Universities and Establishing Correct Evaluation Orientation". This document should break the "SCI supremacy" of papers, take this as a breakthrough, take practical measures with strong pertinence and operability, break the "paper-only theory" and establish a correct evaluation orientation.
Scientific citation index is based on Bradford's literature dispersion theory and E. Garfield's citation analysis theory. It evaluates and studies academic journals and scientific research achievements in many aspects by counting the cited frequency of papers, so as to judge the performance of scientific research output of a country or region, scientific research units and individuals and reflect its international academic level.
Therefore, SCI is an internationally recognized scientific and technological literature retrieval tool worthy of reference. With its unique citation approach and comprehensive scientific data, scientific citation index ranks journals and papers through the statistics of a large number of citations, and then obtains quantitative indicators such as impact factors, citation frequency and real-time index of a journal and paper in a certain discipline.
The high frequency of citation shows that this paper has a great influence in its research field and has attracted the attention of international peers with high academic level. Because the papers included in SCI are mainly in the basic research field of natural science, SCI indicators are mainly suitable for evaluating the achievements of basic research, and the main achievements of basic research are academic papers.