The nonlinear time lag multivariable grey prediction model based on interval grey numbers and its application

The linear relationship of the original grey prediction model is too single, and does not consider time delay effect current input parameters on output parameters. In order to solve these problems, interval number sequence taken as modelling model, nonlinear parameter γ time-delay τ are introduced into multivariate so construct multivariable for number. view uncertain characteristics smog index data, this paper applies improved simulation data. Compared with results show that proposed in superior terms its effectiveness feasibility.