论文共分四个部分。第一部分:用屏幕填充方式代替传统的布尔提问输入方式。主要内容是把提问词(文献标引词)分为两种类型:一种类型的提问词叫文献内容描述词,包括关键词(叙词,自由词)、化学分子式等,它们往往用来描述文献主题内容特征,另一类型的提问词叫文献属性描述词,有著者、文种、文献类型、分类号、年代、出版者等描述文献外部特征的描述词。文中根据大量实际系统布尔提问式的特点,把绝大多数布尔提问式归结为q_1 and(or) q_2形式,其中q_1由文献内容描述词组成,q_2由文献属性描述词组成。在此基础上,试图提出一种不同于以往任何一种提问输入方式的“屏幕填充”法,以代替传统的布尔逻辑式的输入。用户在进行提问输入时,只需根据 The thesis is divided into four parts. The first part: use the screen filling instead of the traditional Boolean question input method. The main content is divided into two types of question words (document indexing words): a type of question word called the description of the content of the literature, including keywords (thesaurus, free words), chemical formulas, etc., they are often used to describe Literature subject content features, the other type of question words called the literature attribute descriptors, with the author, the type of literature, literature type, classification number, age, the publisher describes the external characteristics of the descriptor. According to the characteristics of a large number of practical Bulgarian questions, the vast majority of Boolean questions are summed up as q_1 and (or) q_2 forms, of which q_1 consists of descriptors of document contents and q_2 consists of descriptors of document attributes. On this basis, trying to come up with a “screenfill” method that is different from any of the past input methods to replace the traditional Boolean logic input. When users input questions, just according to