本文回顾了文献概念的发展变化;结合现有的各种定义进行了分析讨论,给出了文献的逻辑定义;对新定义在澄清有关概念和解决文献分类问题方面的作用作了阐述。 This paper reviews the development and changes of the concept of literature, analyzes and discusses the existing definitions, gives the logical definition of the literature, and elaborates on the role of the new definition in clarifying relevant concepts and solving the problem of document classification.