数学与统计学院学术报告[2019] 079号

(高水平大学建设系列报告312号)

报告题目：基于大数据和网络分析的科学学研究

报告人：　 狄增如   教授 （北京师范大学）  

报告时间：2019年10月25日 星期五 16:00-17:00

报告地点：汇星楼（科技楼）515-4

报告内容：

As many high quality scientific publication databases have become increasingly accessible in recent years, researchers realized that the data should be interpreted from the perspective of complex systems with multiple and evolving interactions between components. Using approaches from complex networks and statistical physics, many emergent phenomena have been identified. The main contribution of network analysis is to reveal the hidden rules and patterns in scientific research by building the linkage between different scales and dimensions of the system. We analyze the publication records of individual scientists, aiming to quantify the topic switching dynamics of scientists and its influence. For each scientist, the relations among her publications are characterized via shared references. We find that the co-citing network of the papers of a scientist exhibits a clear community structure where each major community represents a research topic. Our analysis suggests that scientists tend to have a narrow distribution of the number of topics. However, researchers nowadays switch more frequently between topics than those in the early days. We also find that high switching probability in early career (< 12y) is associated with low overall productivity, while it is correlated with high overall productivity in latter career. Interestingly, the average citation per paper, however, is in all career stages negatively correlated with the switching probability. We propose a model with exploitation and exploration mechanisms that can explain the main observed features.

报告人简历：

狄增如，博士，教授，博导，北京师范大学系统科学学院院长，国际系统与控制科学院院士。现任：国务院学位委员会系统科学学科评议组召集人；教育部高等学校教学指导委员会管理科学与工程类专业委员会委员；中国系统工程学会副理事长；中国指挥与控制学会复杂网络专业委员会副主任等。主要研究领域为系统理论与应用、大数据分析、复杂网络及其在复杂系统中的应用等等。2016年由于在复杂系统分析、复杂网络等方面的成就获中国系统工程学会第三届系统科学与系统工程科学技术奖理论贡献奖。

目前担任《系统工程理论与实践》、《系统与控制纵横》杂志副主编, 中国大百科全书第三版《系统科学卷》副主编，Journal of Economic Organization and Behavior, Journal of Systems Science and Complexity等学术杂志编委.

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　　　　　　　　　　　　　　　　　　　　　　　　　 数学与统计学院  

　　　　　　　　　　　　　　 　　　　　　　　　　 2019年10月22日