Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] As an exploratory research, this paper is oriented to the needs of scientific and technological information in the specialized discipline domain, and aims to realize the quantitative analysis of key semantics of the full text and the practical application shift from "information automation" to "knowledge automation". On the basis of previous studies from the perspective of knowledge element co-occurrence to explore the evolution mechanism of ESI research fronts, this paper further proposes a research front knowledge evolution analysis method based on knowledge element variation. [Method/process] Firstly, knowledge elements were represented as word vectors by word2vec word embedding model. Then, this paper calculated Euclidean distance of knowledge element vectors, and identified knowledge element clusters with similar semantic and pragmatic association by K-means clustering method. Finally, TF-IDF values of each knowledge element in the diachronic cluster were calculated. Through the quantitatively measurement of sudden changes in the importance of knowledge elements, the characteristics and rules of knowledge element variation were mined in the process of ESI research fronts evolution. [Result/conclusion] Through the comparative test of the detection results, it is found that the scientometric method based on knowledge element variation is not only a supplement and expansion of the previous research methods, but also makes the mining of the internal knowledge movement law of ESI research fronts more specific and detailed. Moreover, in the scope of time series, it is a strong evidence that the future development trend and key information signals of the ESI research fronts can be detected as soon as possible.
Subjects: Library Science，Information Science >> Information Science submitted time 2017-07-13 Cooperative journals: 《智库理论与实践》
Abstract：[目的/意义]在智库逐渐成为学术界和政府关注焦点的背景下,对《2015研究前沿》报告的相关实践及问题进行揭示和探讨,以期为我国智库从业人员和相关决策者提供参考和借鉴。[方法/过程]总结《2015研究前沿》报告产生的背景与方法以及取得的效益和评价,并对"研究前沿"和"科技前沿"分析的基本问题提出了几点思考和探讨。[结果/结论]《2015研究前沿》报告利用独特视角揭示科学研究脉络,遴选出100个热点前沿和49个新兴前沿,对重点前沿进行了深入解读,评估了主要科技国家的基础贡献实力和潜在发展水平,对中美表现进行了详细对比分析,在社会上和学术界均取得积极的反馈和评价。此外,对报告背后基本问题的探讨也将有...
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