关键词: 合著网络, 学术论文质量, 网络位置, 社会网络分析, Co-authorship network, Quality of academic papers, Network position, Social network analysis

Abstract: Previous literature on co-authorship network mainly characterized the research network structure in some scientific fields by means of social network analysis, but rarely investigated the factors which influenced the positions of stars in co-authorship network. Based on the co-authorship network in the field of innovation network from 1990 to 2012, we investigated the effects of academic paper quality on the network positions of stars in co-authorship network. Research findings indicate that the network positions of stars are influenced not only by the quantity of academic papers, but also by the quality of academic papers. Specifically, the net citation frequency can be used to predict the size of an author’s ego-network; collaborating with geographically distant authors negatively affects the efficiency with which they can reach others in the co-authorship network; the star authors with highly specialized knowledge are more likely to take the role of mediator, i.e., specialist would be the ideal knowledge broker in a co-authorship network.