创新网络结构演化对技术生态位影响的实证分析

An empirical analysis on impacts of structural evolution of innovation networks on technological niches

借鉴态势理论,通过技术生态位"态"的分析,从量上衡量节点的技术创新能力,通过技术生态位"势"的分析,从增长率上衡量节点技术创新能力对网络环境的潜在影响力。运用社会网络分析法,以2003-2015年间移动通讯终端联合申请发明专利数据为样本,分析不同时期移动通讯终端创新网络的演化规律,研究发现移动通讯终端创新网络结构由原来松散型、简单型逐渐向紧凑型和复杂型演化。在此基础上,计算了网络演化的结构特征值,对网络结构与技术生态位"态"和技术生态位"势"的关系进行了回归分析,实证结果发现:度数中心度与技术生态位"态"呈倒U型关系;度数中心度、结构洞和关系强度与技术生态位"势"均呈倒U型关系。

Based on ecostate-ecorole theory,technological innovation capabilities of nodes are quantitatively measured by analyzing＂ecostate＂of technological niches,and their potential impacts upon network environment are measured from the perspective of their growth by analyzing＂ecorole＂of technological niches. With the application of social network analysis,the data on joint applications for inventions and patents in mobile communication terminals from 2003 to 2015 are sampled to analyze the structural evolution laws of the mobile communication terminal innovation network in different periods. It is found that original loose and simple networks have gradually evolved into compact and complicated ones. Subsequently,this paper calculates the characteristic values of the structurally evolved networks,constructs regression models to analyze relationships between network structures and＂ecostate＂and＂ecorole＂of technological niches. The empirical results suggest that inverted U-shaped relationships exist between degree centrality and＂ecostate＂of technological niches. The degree centrality,structural holes and tie strength are also discovered to have such relationships with the ＂ecorole＂of technological niches.