[Objective] This paper aims to identify the interdisciplinary subjects based on the feature measure method and the PhraseLDA model. [Methods] First, we analyzed the subjects’ interdisciplinary characteristics and constructed their measurement index system. Then, we identified the interdisciplinary subjects with the help of the PhraseLDA model. Finally, we conducted an empirical study of nanotechnology applications in agricultural environments. [Results] A total of 24 cross-topic were objectively identified, including catalyst preparation, soil bioremediation, and many more. Compared with the traditional identification method, the cross-topic recognition rate of the proposed method increased by 71.40%, and the recognition rate of fine-grained topics increased by 42.86%. [Limitations] The number of topics and interdisciplinary topic identification indicators of the PhraseLDA topic model were decided after repeating calculation and debugging. Therefore, the proposed method depends on the rationality of the relevant thresholds. [Conclusions] The proposed method can effectively identify interdisciplinary topics and support scientific decision-making and technological innovation research in related fields.
张振青, 孙巍. 基于特征测度和PhraseLDA模型的领域学科交叉主题识别研究——以纳米技术的农业环境应用领域为例*[J]. 数据分析与知识发现, 2023, 7(7): 32-45.
Zhang Zhenqing, Sun Wei. Interdisciplinary Subject Recognition Based on Feature Measurement and PhraseLDA Model——Case Study of Nanotechnology in Agricultural Environment. Data Analysis and Knowledge Discovery, 2023, 7(7): 32-45.
high sensitivity; high performance liquid chromatography; ionic liquid; high selectivity; good reproducibility; ionic strength; analytical performance; sensitivity selectivity; thermal stability; high affinity
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