主题词（Subject word）.doc

主题词（Subject word） Instructions for the use of official subject headings of the State Council I. compiling principles (1) the word list structure is logical and has a wide coverage, so that it is easy to use. (two) the word list embodies the principle of integration of document management, that is, the regional classification and category words of subject words can be classified as major categories and categories in archives classification. Two, system structure (1) the vocabulary consists of 15 categories and 1049 subject headings, which are divided into two parts: the main table and the 298 lists. The main table has 13 categories and 751 subject headings. There are 2 categories and two key words in the attached table. The vocabulary is divided into three levels. The first layer is the classification of the key word areas, such as comprehensive economy, finance and finance. The second layer is the specific category word classification of key words, such as labor, energy, and Telecommunications in the industry, traffic, energy and post etc.. The third layer is generic. Such as system, function, preparation and so on. The second and third layers are collectively referred to as subject words, which are used for indexing documents. Three. Indexing method (1) the indexing of a document, with the exception of category words, does not exceed 5 subject headings. Subject headings are marked on the CC column of the document and written in the top case. (two) the indexing order is the first category, and the second is the category. In the term class, the word that reflects the contents of the document is first marked as the word in the form of the document. For example, the Circular of the State Council on strengthening the work of soil and water conservation shall be first marked by the term agriculture, and then the term soil and water conservation shall be added to the term soil and water conservation and shall be marked as notification at last. (three) if there are more th