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期刊的“在版主题标引”是指在每期刊物的每篇文献的题目下或摘要后标有该文献的检索词——关键词或主题词。这些检索词,主要来自文献的篇名、摘要以及正文,通常是由作者或编辑给出。期刊“在版主题标引”使文献的标引工作与该文献的印刷排版同步完成,为提高情报检索效率、普及计算机在情报检索工作中的应用奠定了良好的基础。其主要优点在于:
The journal’s “in-topic index” refers to the keyword or keyword used in the literature after the title or the abstract of each of the articles in each issue. These terms, mainly from the article title, abstract and body, usually given by the author or editor. Periodical “indexing in the edition of the subject” enables the indexing work of the document to be completed synchronously with the printing and typesetting of the document, laying a good foundation for improving the efficiency of information retrieval and popularizing the application of computer in the information retrieval work. Its main advantages are: