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[目的 /意义]分析中国国内基于主题模型的科技文献主题发现及演化研究进展,以期为相关研究人员提供参考借鉴及研究思路。[方法 /过程]选取中国知网(CNKI)数据库及万方数据知识服务平台作为文献来源,检索并筛选相关文献,通过人工判读提炼出基于主题模型的科技文献主题发现及演化研究的分析流程,并采用文献分析法对流程中国内研究人员所使用到的策略、方法、分析手段等进行归纳和总结。[结果 /结论]研究已初具规模,形成较为完整的分析流程,同时各个流程环节上所涉及到的策略、方法和分析手段较为多样化。另外,也存在着一些问题:主题模型方法在科技文献领域的应用尚且不成熟,主题数目固定,缺少对主题模型应用效果的评价方法与准则。
[Purpose / Significance] To analyze the research progress on the theme discovery and evolution of science and technology literature based on thematic models in China, with a view to providing reference and research ideas for relevant researchers. [Methods / Processes] CNKI database and Wanfang data knowledge service platform were selected as the source of the literature, the relevant documents were searched and screened, and the analysis flow of topic discovery and evolution research based on thematic models was extracted through manual interpretation. And uses the literature analysis method to summarize and summarize the strategies, methods and analysis methods used by domestic researchers in the process. [Results / Conclusions] The research has taken shape and formed a complete analysis process. At the same time, the strategies, methods and analytical methods involved in each process are quite diversified. In addition, there are also some problems: the application of the theme model in the field of scientific literature is not yet mature, the number of topics is fixed, and the evaluation methods and criteria for the application of the theme model are lacking.