Multi-stage Dynamical Model of Innovation Product Diffusion
创新产品扩散的多阶段动态模型

Under the framework of decision theory, this paper presents a multi-stage innovation product diffusion model with the theory of dynamic analysis, which includes the effect of price and advertising. For the durable products, the diffusion system is stable, the free sampling can only affect the process of innovative product diffusion,but not affect the ultimate adopters. For the repeated products, the diffusion process will make the coexistence of the product and its competitive products under certain cases. The paper also shows Mesak model and Bass model are the specific cases of the model. Finally, the paper makes a case study with the internet adoption, the result is better than present study of the internet adoption.