While optimize the three models through white noise test and the stationary test according to the AIC , SC and accuracy principle to obtain the optimal mode SARIMA ( 1,1,1 )( 1,1,1 ) 12 .
对三个通过白噪声检验和平稳性检验的模型，根据AIC、SC和精度原则进行模型优化，得到最优模型SARIMA（1,1,1）（1,1,1）12。
SARIMA