Help solve the postgraduate entrance examination questions in the library?

Specificity: It is one of the indexes to evaluate the quality of information retrieval system, also called "specificity". Indexing words reveal the depth of literary theme concept, that is, the consistency of connotation and extension between indexing words and literary theme concept. General words (such as libraries) are less specific than specific words (such as public libraries), and specific words are more specific than general words. Concreteness can be divided into thesaurus (or classification table) concreteness and indexing concreteness.

The author number is also called the "responsibility number". A similar distinguishing number, which distinguishes different documents with the same classification number by the number representing the name of the document owner. In general, you must use the author number table to find the author number.

Chicago School exists in many disciplines. In the field of library, it refers to the school that emphasizes the social foundation of library, the organization of literature information and the research of library's dissemination of social information, and thinks that library is a scientific library, not a library in a library. Its representative figures are Dewey and others.

Objective knowledge: there is no unified definition of this concept so far. In the eyes of library science, objective knowledge is recorded on all material carriers and can be accepted by most people. Please refer to Wang Zizhou's Basic Course of Library Science 1 13.

Collaborative digital reference service: refers to a number of libraries or consulting institutions to establish cooperative relations, make full use of their respective information resources and talent advantages, coordinate service hours, and provide consulting services to users 24 hours a day, 7 days a week. Collaborative digital reference service makes full use of the collaborative integration power of the network and the human and equipment resources of libraries and consulting institutions to realize resource sharing and promote the development of information services of the whole library and consulting institutions. See Qiu Junping's Information Consultation and Decision-making, Ke Ping's Introduction to Information Consultation, and Zhan Deyou's Theory and Method of Information Consultation.