第一章首先分析了现有“文献主题”定义的不合理之处,建议将文献主题定义为:从特定角度概括文献中有情报价值的单元内容的概念;接着讨论了国内外有关文献主题结构的观点,认为应该多级设计文献主题结构,并提出了一种由主体因素、方面因素、关联因素、限定因素组成的最概括的通用主 The first chapter first analyzes the unreasonableness of the definition of the existing “subject of literature”, and proposes to define the subject of the literature as follows: to summarize the concept of unitary content that has the value of intelligence from the perspective of literature; and then to discuss the related subject structure at home and abroad , We think that the theme structure of the literature should be designed in multiple stages and put forward a kind of most general master which is composed of the main factor, the aspect factor, the related factor and the limited factor