Multi-variable grey forecast based on TOPSIS method

Grey forecast has been widely used in many areas for the characteristics of few data and poor information by differential equation of accumulated generation series. In the forecast process of grey model, different number of variables can produce forecast results with different precision. This paper selects variables to forecast with TOPSIS method, which takes different affect factors as plans and converts time factors to attributes. Case studies show that TOPSIS method can be used to variables choice to produce good forecast results.