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S-shaped curves , such as bass model, Logistic model and Gomperz model, have been used widely for the diffusion curve of a new product or service in the field of innovation diffusion, and however, which is better to fit the datasets of mobile subscribers or Internet subscribers in China, the answers of all the scholars are different. To compare the techniques for their estimating the parameters these...
Bass model have been used widely for diffusion curve of a new product in some countries of the world, but only a few studies have explored in the parameters' estimation of bass model. In this paper, Bass model is adopted to fit the diffusion curve of mobile subscribers of China with different parameter-estimation techniques respectively, such as NLS(Non-Linear Least Squares ) ,OLS(Ordinary Least Squares),...
According to the features of contingent diffusion products, the limits of Bass model are analyzed. A contingent diffusion model with its extended model is constructed based on Bass model, and its structure and features are analyzed in detail. Then the wireless Internet subscribers are taken for example to build the contingent diffusion model. The parameters of the contingent diffusion model are estimated...
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