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對(duì)水泥產(chǎn)量的預(yù)測(cè)研究,可以把握水泥的生產(chǎn)狀況,調(diào)整水泥工業(yè)結(jié)構(gòu).本文以2001年至2012年我國(guó)社會(huì)水泥產(chǎn)量為背景,采用非季節(jié)差分和季節(jié)差分,建立了SARIMA模型,最后得到SARIMA(2,1,1)(1,1,1)12模型.模擬結(jié)果平均相對(duì)誤差絕對(duì)值MAPE=3.40%,表明預(yù)測(cè)值與實(shí)際值很接近,該模型合理有效.
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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