基于DTM模型和文本特征分析的基金项目新兴趋势探测研究* ——以NSF石墨烯领域为例
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徐路路, 王效岳, 白如江, 周彦廷
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Detecting Emerging Trends of Funds Based on DTM Model and Text Analytics: Case Study of NSF Graphene Field
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Xu Lulu,Wang Xiaoyue,Bai Rujiang,Zhou Yanting
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| 表8 石墨烯新兴趋势主题及主题词权重列表 |
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| 主题 | 主题词权重列表 | Topic0:
optical | optical(53)|graphene(21)|radiation(20)|light(18)
|investigate(16)|terahertz(14)|infrared(14)|electrical(13)|nanomanufacturing(12)|layer(12) | | Topic1: detection | detection(36)|water(25)|sensor(21)|system(20)|lead(17)
|sensors(14)|based(14)|physics(13)|electrons(11) | | Topic3: energy | energy(28)|material(26)|chemistry(23)|program(19)
|infrared(19)|project(18)|faculty(14)|chemical(13)
|stem(13)|precursor(11) | | Topic7: chemistry | chemistry(23)|graphene(19)|nanoscale(19)|electrons(18)
|properties (17)|separation(17)|nano(16)|surface(16)
|storage(15)|energies(14) |
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