Research Progress in Computer and Information Science in Recent 20 Years: Thematic Analysis of Information Processing and Management

[Purpose/significance] This paper analyzes the themes of papers published in Information Processing and Management from 2000 to 2020, in order to know the thematic focus and evolution trends of IPM, and provide references for the development and related research of computer and information science. [Method/process] Firstly, based on 1852 research papers in the full-text database of ScienceDirect, this paper counted and visualized the titles, abstracts and keywords of the papers to classify the thematic categories. Then, this paper analyzed the research themes of each category systematically. At last, it compared the thematic focus in different periods and analyzed thematic evolution trends. [Result/conclusion] IPM mainly focuses on three themes of information retrieval, text analysis and user research, and presented evolution characteristics in general: information retrieval as the core theme, transform from text and information analysis to multimedia and knowledge analysis, and in-depth analysis and mining of user sentiments.