Optimal Combination Forecasting Analysis Based on Grey and Neural Network Model

In this paper,in order to fully exploit the data principle in the time series,an optimal combination forecasting model based on grey forecasting model,the neural network algorithm and the minimum variance criteria is set up,according to the nonlinearity of the import and the export total amounts.Simulation results demonstrate that,the optimal combination forecasting model can improve the prediction accuracy of the nonlinear time series.