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[目的 /意义]为揭示情报学领域近15年的研究方向和发展演化情况,了解和掌握研究主题热度的动态变化。[方法 /过程]基于动态主题模型(Dynamic Topic Model),以国内外情报学领域影响因子较高的6本核心期刊作为数据集,分析国内外情报学研究主题演化过程,从主题热度的宏观维度和词语变化的微观角度入手,对比分析主题的研究内容和研究热度异同点,以期为我国情报学研究提供参考和借鉴。[结果 /结论]研究结果表明,国内情报学研究内容偏重实际应用,国外偏重于技术与方法的创新;同一研究主题在不同时期涉及研究内容差别明显,导致其研究热度随着时间推移发生变化;相对于国内,国外情报学研究主题传承性和递进性更强,热度变化较小。
[Purpose / Significance] To reveal the research direction and evolution of the past 15 years in the field of informatics and to understand and master the dynamic changes in the research topics. [Methods / Processes] Based on the Dynamic Topic Model, six core journals with high impact factors in the field of informatics are used as data sets to analyze the evolution of informatics research topics at home and abroad. From the macroscopic perspective And the micro-perspective of the word change, comparative analysis of the theme of the research content and research similarities and differences, in order to provide reference for the study of China’s information science. [Results / Conclusions] The results of the research show that the content of domestic informatics research is more emphasis on practical application, and the foreign emphasis on innovation of technologies and methods. The research topics of the same subject are obviously different in different periods, leading to the change of their research intensity with time. Relative to the domestic and foreign information science research topics more progressive and progressive, heat changes smaller.