Research On Papers Keywords Set And The Network Analysis For Library Subject Service

Library discipline service is continuously developed in China.With the evolution of data environment and user requirements,library must provide richer data resources,data products,data tools and so on,to meet the increasing information demand of the users.The key words are refined by the author to summarize the main theme of the paper.It highly summarizes the main research content,the main academic thoughts and the main research methods.In the literature review,relevant theories and methods of discipline service mode and keyword analysis at home and abroad are organized.On the basis of keyword analysis and related concepts.aking ‘keyword' which is necessary in academic papers as an entry point,the concept of keyword set is raised by studying the international keyword analysis experience.Based on the ten years' academic papers of the eighteen core periodicals of CSSCI,collecting data according to the logical relationship of ‘subject-journal-paper – keyword',the keyword set of the core periodicals in the field of library and information is constructed.Firstly,quantitative analysis of the collected keyword set is carried out.Based on the word frequency analysis,the author discusses the information of keyword order and information of word length,and enriches the keyword measurement analysis.Besides,based on the social network analysis(SNA)theory,co-existing network of the collected keyword is constructed through the micro perspective of the authors,periodicals and institutions,the characteristic parameters of the network,the centrality of the key words in the network and the density clustering coefficients of the network are calculated.In the end,the author uses R language programming technique to visualise the keyword set co-occurrence network,constructs the feature ‘portrait' of keyword set,realises the application of abstract data service theory,and provides a new perspective for knowledge mining.Through deep research on keyword sets,the overall situation and research characteristics of the subject can be grasped effectively.In this paper,taken the discipline of library and information as an example,in order to enrich the subject service of the library,the author designs a universal process and computer programming method,and extends it to more subjects.