Revealing and comparing the evolution process of hot topics in the field of Digital Library in China and abroad.[Methods]:Taking data in the field of Digital Library from core journals in CKNI and Web of Science from ...Revealing and comparing the evolution process of hot topics in the field of Digital Library in China and abroad.[Methods]:Taking data in the field of Digital Library from core journals in CKNI and Web of Science from 1990 s to 2020,topics are extracted by LDA model and hot topics are selected based on life cycle theory.Topic evolution paths are generated to contrast evolution of hot topics between home and abroad which are grouped into dimensions of technology and application.It fails to analyze the lagging performance and reasons of research hot topics in the field of Digital Library at home and abroad.In technological dimension of Digital Library,the research content in China lags behind that at abroad.In terms of application dimension,Chinese application tends to focus on social sciences,while application at abroad tends to focus on natural sciences.The evolution of overall research focus is U-shaped,which gradually shifted from technological research to application research,and now turn back to technological dimension.Nowadays,there are also many emerging topics combined with big data technology.展开更多
[目的/意义]知识流动能推动一个国家的知识创新,通过中国与其他国家间的知识流动模式与流动过程中主题演变的研究,对深入理解国家间的知识流动过程具有重要意义。[方法/过程]将国家间知识转移和知识转化的过程作为国家间知识流动的完整...[目的/意义]知识流动能推动一个国家的知识创新,通过中国与其他国家间的知识流动模式与流动过程中主题演变的研究,对深入理解国家间的知识流动过程具有重要意义。[方法/过程]将国家间知识转移和知识转化的过程作为国家间知识流动的完整过程,以Web of Science为数据来源,依据其学科类别划分标准,以Information Science&Library Science(以下简称为ISLS)为例,利用LDA模型进行主题提取,分析中国对其他国家的知识转移和知识转化,以及知识转移和知识转化后的主题分布。[结果/结论]中国对其他国家的知识转移主要集中在7个主题;对美国的知识转移主要集中在5个主题;对韩国的知识转移主要集中在4个主题;美国和韩国的知识转化分别集中在3个主题,美国的研究主题更侧重个人隐私保护、文献计量、知识共享与企业创新,而韩国的研究主题更侧重信息鸿沟、网络计量、情报技术融合与创新。展开更多
文摘Revealing and comparing the evolution process of hot topics in the field of Digital Library in China and abroad.[Methods]:Taking data in the field of Digital Library from core journals in CKNI and Web of Science from 1990 s to 2020,topics are extracted by LDA model and hot topics are selected based on life cycle theory.Topic evolution paths are generated to contrast evolution of hot topics between home and abroad which are grouped into dimensions of technology and application.It fails to analyze the lagging performance and reasons of research hot topics in the field of Digital Library at home and abroad.In technological dimension of Digital Library,the research content in China lags behind that at abroad.In terms of application dimension,Chinese application tends to focus on social sciences,while application at abroad tends to focus on natural sciences.The evolution of overall research focus is U-shaped,which gradually shifted from technological research to application research,and now turn back to technological dimension.Nowadays,there are also many emerging topics combined with big data technology.
文摘[目的/意义]知识流动能推动一个国家的知识创新,通过中国与其他国家间的知识流动模式与流动过程中主题演变的研究,对深入理解国家间的知识流动过程具有重要意义。[方法/过程]将国家间知识转移和知识转化的过程作为国家间知识流动的完整过程,以Web of Science为数据来源,依据其学科类别划分标准,以Information Science&Library Science(以下简称为ISLS)为例,利用LDA模型进行主题提取,分析中国对其他国家的知识转移和知识转化,以及知识转移和知识转化后的主题分布。[结果/结论]中国对其他国家的知识转移主要集中在7个主题;对美国的知识转移主要集中在5个主题;对韩国的知识转移主要集中在4个主题;美国和韩国的知识转化分别集中在3个主题,美国的研究主题更侧重个人隐私保护、文献计量、知识共享与企业创新,而韩国的研究主题更侧重信息鸿沟、网络计量、情报技术融合与创新。
