Consider the GARCH(1,1)model = α0 + α1
+ φ1
.Show that this model can be rewritten as
=
+ α1(
+ φ1
+
+
+ ... ).(Hint: use the GARCH(1,1)model but specify it for
;substitute this expression into the original specification,and so on. )Explain intuitively the meaning of the resulting formulation.
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