A Fractional Discrete Grey Model with Particle Swarm Optimizer and Its Applications in Forecasting the Gasoline Consumption in Chongqing China
Lanxi Zhang
School of Science, Southwest University of Science and Technology, Mianyang 621010, China.
Yubin Cai *
School of Science, Southwest University of Science and Technology, Mianyang 621010, China.
*Author to whom correspondence should be addressed.
Abstract
Forecasting gasoline consumption is of great significance for formulating oil production, foreign trade policies, and ensuring the balance of domestic refined oil supply. Based on grey system theory, a fractional accumulation operator is constructed to optimize the accumulation method of the traditional discrete grey model, and the Particle Swarm Optimization algorithm is used to solve the fractional nonlinear parameters. This model was used in the prediction of gasoline consumption in Chongqing, China, and compared with the existing 7 models. The results show that the fractional discrete grey model optimized by PSO has better prediction accuracy. The fractional discrete grey model optimized by PSO can be used as a quantitative method in the field of energy forecasting.
Keywords: Grey system, Fractional order accumulation, Particle swarm optimization, Gasoline consumption