关键词: 第三方平台, 网络效应, 竞争型企业, 多价值链, 系统动力学

Abstract: Aiming at a multi-value chain system consisting of multiple manufacturers,multiple high-quality suppliers,multiple ordinary suppliers and a third-party platform,considering the influence of multiple cross-network effects,inter-group and intra-group network effects on the willingness of various users to access the platform,a competitive enterprises' multi-value chain network effects model was established by using system dynamics method.The Vensim software was used to simulate competitive enterprises' inter-group and intra-group network effects,and the impact of inter-group and intra-group network effects on users' scale and the revenues of each participant were further analyzed.Research results showed that the two types of suppliers' inter-group and intra-group network effects were significant in platform's growth stage.The enhancement of one type of suppliers' negative inter-group network effect would reduce another type of suppliers' access number,but might stimulate more manufacturers to access platform.While the enhancement of one type of suppliers' negative intra-group network effect would increase another type of suppliers' access number,but did not necessarily affect manufacturers' access number.Besides,the enhancement of both types of suppliers' inter-group or intra-group network effects would decrease platform's revenues,but might increase manufacturers' revenues.

Key words: third-party platform, network effects, competitive enterprises, multi-value chains, system dynamics