关键词: 联盟组合, 结构特征, 开放式创新, 案例研究, 扎根分析, alliance portfolio, open innovation, structural characteristic, case study, root analysis

Abstract: Open innovation is an innovative paradigm，in which enterprises can build some kind of open innovation network with the development of internal and external resources to realize the value maximization,breaking through the enterprise boundaries.Whereas union combination is an organization form that a core enterprise can simultaneously set up multiple alliances with suppliers, customers, complementary, etc. The purpose of this article is to analysis the effects of alliance portfolio on open innovation performance. First, an integrative framework of three levels that include "point - edge - net" is constructed. Second," point - edge - net" are disaggregated into six measured variables such as resource diversity, resource heterogeneity, the number of relationship, the intensity of relationship, the strength of network structure, and the coupling mechanism. Then, a case study of REFOND is analyzed to research the relationships between the six variables with open innovation. And this article finds that the six variables have positive effects on open innovation performance. Lastly, according to the analysis of REFOND, the related theory about open Innovation based on alliance portfolio is proposed.