(一) 分类法和主题法的比较主题法的特点是直观性,它比较适合从事物检全出发进行检索,要检全一种事物多方面的文献资料较容易,但要检全一门学科或一个专业以及各种事物在同一学科、同一专业方面的文献则较难。而分类法的特点是系统性,它比较适合从学科门类出发进行检索,它的检全率与主题法正好相反。 (A) comparison between the classification and thematic law Thematic law is characterized by intuitive, it is more suitable for starting from the detection of things, it is easier to check a variety of documents and materials, but to check a subject Or a profession and a variety of things in the same subject, the same professional literature is more difficult. The classification is characterized by systematic, it is more suitable for retrieval from the subject category, its check rate and the thematic method exactly the opposite.