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分类标引属于主题标引。它同主题词标引一样是对文献内容进行主题标引。所不同的是,分类标引对主题概念进行的是类的划分,即把主题概念归在某一个类目下,而主题词标引对主题概念进行的是概念的命名,即给主题概念冠一个同义概念的称呼,即主题词。一般地,主题概念的名称可以与一个类目名称完全一致,也可以不完全一致。当遇到不完全一致的情况时,就需要作升位方式的标引。在对档案
Categorical indexing belongs to the subject indexing. It is the same as the keyword index is the subject content indexing. The difference is that classification index on the theme of the concept of the class is divided, that is, the subject under the concept of a category, and keyword indexing on the concept of the concept of the concept of the concept of the name that is the concept of the crown A synonym for the title, the keyword. In general, the names of topic concepts may or may not be exactly the same as a category name. When faced with the situation is not entirely consistent, you need to upgrade for indexing. In the file