R语言garch回归

variance.model=list(model="sGARCH",garchOrder=c(1,1),submodel=NULL,external.regressors=NULL,variance.targeting=FALSE)distribution.model="norm"ugarchfit(spec,datax,out.sample=0,solver="solnp",solver.control=list(),fit.control=list(stationarity=1,fixed.se=0,scale=0)