Komunjer, Ivana - Department of Economics, University of California-San … - 2001
We study the properties of a quasi-maximum likelihood (QML) for the parameters of a "weak" GARCH process obtained by … contemporaneous aggregation of two independent "strong" GARCH processes. The inconsistency of the Gaussian quasi-likelihood estimator … causes of inconsistency of QMLE in the "weak" GARCH case and compare the performance of QMLE when the innovations are assumed …