对水泥产量的预测研究,可以把握水泥的生产状况,调整水泥工业结构.本文以2001年至2012年我国社会水泥产量为背景,采用非季节差分和季节差分,建立了SARIMA模型,最后得到SARIMA(2,1,1)(1,1,1)12模型.模拟结果平均相对误差绝对值MAPE=3.40%,表明预测值与实际值很接近,该模型合理有效.
the party's fine styl e, carry forward t he traditional Chinese virtue s, pra ctici ng the Socialist core value s, vigor ously carry forward the spirit of Jiao Yulu, Hongqi Ca nal spirit and spirit of persiste nce, honesty i n politics, strict statesman, stick to t he spiritual heights of the Communists. Four to devoti on, as, do play a role i n qualifying. Official Communist duty. To fulfill the