Before revision:  This approach enables us to predict the incidence of 2019-nCoV effectively and the clear advantage of the model accuracy more reliable than the traditional SIR model .
After revision:  This approach enables us to predict the incidence of 2019-nCoV effectively and the clear advantage of the ground truth. These findings have implications for the forecasting of epidemic trends in COVID-19 as these could help the growth of estimating epidemic situation .