Moving Average Model with an Alternative GARCH-Type Error

(整期优先)网络出版时间:2018-02-12
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Motivatedbythedoubleautoregressivemodelwithorderp(DAR(p)model),inthispaper,westudythemovingaveragemodelwithanalternativeGARCHerror.ThemodelisanextensionfromDAR(p)modelbylettingtheorderpgoestoinfinity.Thequasimaximumlikelihoodestimatoroftheparametersinthemodelisshowntobeasymptoticallynormal,withoutanystrongmomentconditions.Simulationresultsconfirmthatourestimatorsperformwell.WealsoapplyourmodeltostudyarealdatasetandithasbetterfittingperformancecomparedtoDARmodelfortheconsidereddata.