What Is an SHTML Index?

Citation index is a new type of index established by using the citation of documents and the citation relationship. It was developed in the 1950s by American intelligence scientist E. Garfield (1925-), based on the legal citation principle of Shepard's ci-tation. It is different from conventional indexes in terms of compilation principles, system structure, and retrieval methods. It has unique properties and functions and is an important supplement to conventional indexes. The compilation principle is to use the quotation itself as a search term to index all documents that have cited a certain quotation. When searching, it is to search other literatures that have cited the literature from the cited literature. It can smooth out the "citation network" between scientific works, reveal citation relationships between documents, and retrieve a batch of related documents. The citation index can be used for multiple types of searches, and can also become a tool for evaluating core scientific journals, core publishers, evaluating scientists, scientific communities, and national scientific research capabilities and levels through citation analysis. Citation indexes are more common in the social and human sciences than in most natural sciences. The most famous citation index of our time is the Science Citation Index, Social Science Citation Index, and Art and Humanities Citation Index edited and published by the Scientific Information Service established by Garfield. ^[1]

Citation Index

In 1873, the United States published a search tool "Shepard Citations" for lawyers to consult legal precedents. 1950s, United States

The citation index uses a certain document (including basic data such as author, title, year of publication, source) as the heading, and all documents and sources that have cited or referred to the document are listed under the heading. It is mainly used for users to find citations from citations. In addition to the citation index, general citation index journals often have source indexing agency indexes and rotating subject index source indexes. They mainly cite recently published documents with citations (referred to as source documents or citations). The titles, titles, sources, references, and author addresses are listed under the headings. The institutional index takes the author's institution as the heading. The heading lists the authors and sources of the recently published literature of the institution. It can reflect the recent publication of the literature by scientific researchers of an institution. Rotary topic index is a word-pair keyword index (see Keyword Index), which is formed by selecting two keywords from the source document title keywords at a time. Through these auxiliary indexes, users can retrieve related documents from various sources such as the author, subject, region or institution of the cited document.

Citation index overcomes the difficulty of selecting topic words or using traditional topic index and classification index.

Citation indexes are mostly used for literature retrieval in emerging disciplines, interdisciplinary subjects, and other complex topics. Citation analysis can reveal the internal connections between some important scientific discoveries and predict the development direction of science and technology. The data obtained from citation analysis can also be used to evaluate the value of scientific and technological literature, the performance and level of scientific and technological personnel and scientific research institutions. Citation analysis technology provides a new method for the research of bibliometrics and scientometrics.