科研流动对科研绩效的影响路径 ——基于科研合作的中介作用研究

Impact Path of Scientific Research Mobility on Scientific Research Performance: A Study based on the Mediating Role of Scientific Research Cooperation

摘要:

随着知识创造的复杂程度增加，国际科研合作成为产生高质量论文、解决复杂科学问题和提升科研绩效的重要手段，但少有研究从科研合作网络特征的角度探讨个人科研流动对科研绩效的影响。因此，基于清华大学计算机科学与技术系建立的AMiner所发布的《全球最具影响力人工智能学者（AI 2 000）》，以人工智能领域下语音识别和人机交互两子领域172位学者为研究对象，探讨学者的科研流动对学者学术影响力的影响，并以科研合作网络的网络规模和网络密度为合作度量，通过构建中介模型和Sobel检验，分析学者科研合作在科研流动对学术影响力关系中的中介效应。结果表明：人工智能领域权威学者在教育阶段流动较少，不少学者从本科到博士均在同一机构完成；学者的科研流动会给学者个体合作网络的网络特征带来差异；学者的科研流动经历也会对学者的学术影响力产生影响；学者科研合作网络的网络规模和密度在学者流动对学术绩效的关系中起到一定中介效应。在此基础上，针对来自学术发达国家和来自学术发展相对落后国家的学者分别提出相应建议。

Abstract:

As the complexity of knowledge creation increases, international scientific research cooperation has become an important means of producing high-quality papers, solving complex scientific problems, and enhancing research performance. However, few studies have explored the impact of individual scientific mobility on research performance from the perspective of the characteristics of scientific cooperation networks. Therefore, based on the "World's Most Influential AI Scholars (AI 2000)" released by AMiner, established by the Department of Computer Science and Technology at Tsinghua University, this study takes 172 scholars in the two sub-fields of speech recognition and human-computer interaction in the field of artificial intelligence as the research objects, and explores the impact of scholars' scientific research mobility on their academic influence, using the network scale and network density of the scientific research cooperation network as the cooperation measurement. By the mediation model and the Sobel test, the mediating effect of scholars' scientific research cooperation in the relationship between scientific research mobility and academic influence is analyzed. The results show that: in the field of artificial intelligence, leading scholars tend to exhibit low mobility during their educational stages, with many completing their undergraduate to doctoral studies at the same institution. Scholars' research mobility influences the network characteristics of their individual cooperation networks. The research mobility experience of scholars will also affect the academic influence of scholars. The network size and density of scholars' research cooperation networks play a certain mediating effect in the relationship between scholars' mobility and academic performance. Furthermore, corresponding suggestions are put forward for scholars from academically developed countries and those from relatively less developed academic regions.