标引主题词的方法有专指词标引、组配标引、上位标引、靠词标引和增词标引5种。但在主题标引实践中,靠词标引和组配标引成为常用的标引方法。主题词标引的准确与否,直接影响档案著录标引的质量,影响档案检索效率和提供利用。因此,在运用标引主题词方法时须注意以下3个问题:1.标引主题词时首先考虑使用专指词标引。专指词标引是直接从主题词表中查找所需要的专指主题词进行标引。尽管专指词标引的情况不是很多,但是在具体的标引实践中,必须首先考虑选用此种方法。因为直接从主题词表中查到在字面上一致在含义上相符合的主题词,最能准确、恰当地表达档案的主题概念。例如:标引“革命历史档案”这一概念时,当在主题词表中 There are five methods for indexing the keywords, such as specific indexing, grouping indexing, superordinate indexing, lexical indexing and additional word indexing. However, in the practice of subject indexing, lexical indexing and grouping indexing are the common indexing methods. The accuracy of keyword indexing directly affects the quality of indexing of file records and affects the efficiency and availability of file retrieval. Therefore, the use of indexing method should pay attention to the following three questions: 1. The first reference to the use of target words indexed indexing. Specifically refers to the word index is directly from the thesaurus to find the required specifically refers to the keyword indexing. Although the word-specific indexing is not the case, but in specific indexing practice, we must first consider using this method. Because directly from the thesaurus found in the literal consistency consistent with the meaning of the keywords, the most accurate and appropriate expression of the theme of the file. For example: When quoting the concept of “revolutionary history file” when in the thesaurus