[R-SIG-Finance] GARCH with variance targeting, stable distribution
Jens Fricke
Jens.Fricke1 at gmx.de
Sun Sep 9 21:19:59 CEST 2007
Dear All,
I am searching for a possibility to use the garch estimation with
variance targeting, i.e. first estimate the parameter a_0 in a garch
model (h_i=a_0+a_1*r_i-1^2+b_1*h_i-1) based on the unconditional
variance sigma^2: a_0=sigma^2*(1-a_1-b_1). Then, in a second step,
optimize the other parameters a_1, b_1. Is there a way to use the
"garch" routines or to incorporate that into the current functions?
In addition, are there possibilities to estimate GARCH models with
assumed stable distribution?
Thank you very much for your help.
Best regards,
Jens
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