多维主题演化分析模型构建与实证研究

Construction and Empirical Research on Multi-dimensional Topic Evolution Analysis Model

[目的/意义]分析科研主题的复杂演化过程,能够帮助学者及时把握研究热点、研究前沿和发展趋势,然而目前主题演化相关研究主要从单一维度进行演化分析。[方法/过程]文章构建了基于主题热度、状态和演化路径3个维度的主题演化分析模型,以碳纳米管研究领域为例进行了实证研究,首先对相关科技文献数据进行采集、预处理,并利用PLDA模型进行主题识别,然后基于多维主题演化分析模型,结合可视化技术,构建了多个维度的科学知识图谱,分析了主题热度、演化状态、宏观演化脉络和微观演化路径,清晰地描绘了碳纳米管领域的主题演化脉络、趋势。[结果/结论]研究结果表明,多维主题演化分析模型能够准确分析主题演化生命周期的复杂过程。

[ Purpose/significance ] Analysis on the complex process of scientific research topic evolution can help scholars grasp research focus, research frontiers and developing trend, however the current topic evolution researches mainly analyze evolu- tion from a single dimension. [ Method/process ] This paper builds a topic evolution analysis model based on the topic popularity, evolution status and evolution path, with carbon nanotubes research area as an example for the empirical research. Firstly, the pa- per collects and preprocesses relevant scientific literature data, and uses the PLDA model to identify the topics. Then based on the multi-dimensional topic evolution analysis model, combining with visualization technology, the paper constructs the muhi-dimen- sional scientific knowledge map to analyze the topic popularity, evolution status, macro evolution venation and micro evolution path, which can clearly depict the topic evolution venation and trends in the field of carbon nanotubes. [ Result/conclusion ] Results show multi-dimensional topic evolution analysis model can accurately analyze the complex process of the topic evolution life cycle.