Optimization of the Initial Conditions in Unbiased Grey Verhulst Model

As to the problem of initial conditions in the grey Verhulst model,this paper proposed optimal unbiased grey model that takes and as the initial conditions.The new models minimize the errors of the original series and its first-order accumulated generating sequence of simulated values.On this basis,the prediction equations are proposed for the new optimal unbiased grey model.Finally,the effectiveness and the practicality of the model are proved by a real project.