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【目的】从单篇文献入手,在其引文网络中追踪研究主题的来源与走向。【方法】首先,利用领域本体识别单篇文献中的主题;其次,筛选与主题相关的二级参考文献、参考文献、引证文献、二级引证文献,构建面向单篇文献的引文网络;然后,对引文网络进行增量聚类处理,形成主题的来源与走向演化图。【结果】充分揭示文献主题来源或走向中继承、分化、合并的结构变化及各阶段的内容变化。【局限】引文网络构建时文献的筛选条件有待深入研究;主题识别未考虑领域本体中词汇收录不完备问题。【结论】本研究对单篇文献主题的来源与走向进行有效的追踪,能够较好地揭示文献主题的来龙去脉。
【Objective】 Beginning with a single document, we trace the source and direction of the research topics in its citation network. 【Method】 Firstly, the domain ontology was used to identify the topics in a single document. Secondly, the second-level references, references, cited documents and secondary cited documents were selected to construct a citation network for single articles. Secondly, Citation network incremental clustering processing, the formation of the theme of the source and evolution map. 【Result】 The full disclosure of the structural changes of the subject sources or trends in inheritance, differentiation and merger and the changes in the content of each stage. [Limitations] The screening conditions for citations in the construction of citations need to be further studied. Subject recognition does not consider the incomplete inclusion of terms in the domain ontology. 【Conclusion】 This study effectively tracks the source and direction of a single literature topic, which can better reveal the context of the literature topic.