关键词: 信息聚合, 关键词权重计算, 新兴主题识别, 图书情报领域

Abstract:

Information aggregation has become an academic hotspot in many fields, but the definition of its concept and connotation seems to be unclear and vague. Firstly, this paper conducts comparison and analysis on the concepts, practical technologies and applications of information aggregation from the perspective of computer science, economic management and library & information science (LIS), and illuminates the connation and terminology in the field of library and information science. Secondly, this paper selects the literatures of information aggregation in LIS from Social Science Citation Index (SSCI) and China Social Science Citation Index (CSSCI) as research objects. By proposing a new method of emerging topics and considering relative growth rate and multidimensional scaling, comparative analysis and visualization of literature growth trend, research topic distribution and emerging topic development trends have been achieved. The results show that there have been similar changes and trends in developing route of applicable field, changing trend of new theme, distribution of important research topics and research method and technology of information aggregation in LIS both at home and abroad. Finally, this study summarizes the research characteristics of information aggregation in LIS, and proposes some prediction of developing trends of LIS from the aspects of discipline, method and theme.

Key words: Information aggregation, Keywords weight calculation, Emerging topic identification, Library and information science