发明者网络社群系统识别、结构动态及对创新绩效的影响——网络位置的双重调节作用

System Identification,Structural Dynamics and Impacts on Innovation Performance of Inventors'Network Community——Dual Moderating Effect of Network Locations

从抱团研发现象出发,运用基于模块度Q指标的Girvan Newman算法,动态识别发明者合作创新网络社群。通过社群动态追踪,将社群结构动态定义为社群成员流动和社群经纪人稳定两个维度,利用负二项模型,在网络位置的调节作用下,考察发明者所处网络社群结构动态对创新绩效的影响。结果发现:发明者合作创新呈现明显的动态社群结构,社群成员流动对创新绩效的影响呈倒U型关系,社群经纪人稳定正向影响创新绩效且正向调节社群成员流动与创新绩效间的倒U型关系;发明者所处网络核心位置及结构洞位置均正向调节社群成员流动对创新绩效的倒U型影响、负向调节社群经纪人稳定对创新绩效的促进作用、负向影响社群经纪人稳定对社群成员流动与创新绩效间倒U型关系的调节作用。研究结论有助于了解研发抱团行为,为创新网络治理和网络权利配置提供借鉴。

Starting from the phenomenon of clustering R&D,Girvan Newman algorithm based on modularity Q index is used to dynamically identify network communities of inventors’collaborative innovation.Through dynamic tracking of network communities,community dynamics are defined as community turnover and community’s bridge stability.Impacts of structural dynamics of network communities on innovation performance are investigated by using negative binomial models under the moderating role of network locations.The findings show that inventors'collaborative innovation presents obvious dynamic community structures.Community turnover exerts an inverted U-shaped influence on inventor's innovation performance.Community's bridge stability positively affects inventor's innovation and positively moderates the above inverted U-shaped relationship.The locations of both network core and structure hole positively moderate the above inverted U-shaped relationship,negatively moderate the positive influence of community's bridge stability on innovation performance and negatively influences the moderating effect of community bridge's stability on the inverted U-shaped relationship.This research is helpful to understand the clustering R&D behavior and guide the governance and rights allocation of innovation networks.