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RE: RE: st: FIGARCH ado files?
From
"Faugere, Christophe" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
RE: RE: st: FIGARCH ado files?
Date
Sat, 21 Aug 2010 18:18:02 -0400
Robert;
Yes, good point. Thanks.
________________________________________
From: [email protected] [[email protected]] On Behalf Of Robert A Yaffee [[email protected]]
Sent: Saturday, August 21, 2010 5:11 PM
To: [email protected]
Subject: Re: RE: st: FIGARCH ado files?
Christophe,
The authors (1993) Ding, Granger and Engle, in their article postulating this
model, found that the power term allowed them to
handle long-memory processes.
Cheers,
Robert
Robert A. Yaffee, Ph.D.
Research Professor
Silver School of Social Work
New York University
Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2009.pdf
CV: http://homepages.nyu.edu/~ray1/vita.pdf
----- Original Message -----
From: "Faugere, Christophe" <[email protected]>
Date: Saturday, August 21, 2010 3:26 pm
Subject: RE: st: FIGARCH ado files?
To: "[email protected]" <[email protected]>
> Robert;
>
> Thanks. I did try saarch, tarch and GJR-garch but not aparch. I have
> had convergence issues with some of these. I'll try that. Any
> econometric reasons to expect the aparch may be better than other
> threshold models?
>
> Cheers
>
> Christophe
>
> ________________________________________
> From: [email protected]
> [[email protected]] On Behalf Of Robert A Yaffee [[email protected]]
> Sent: Saturday, August 21, 2010 3:17 PM
> To: [email protected]
> Subject: Re: st: FIGARCH ado files?
>
> Christophe,
> You should try the Asymmetric Power Garch if you
> have those problems first.
> - Robert
>
> Robert A. Yaffee, Ph.D.
> Research Professor
> Silver School of Social Work
> New York University
>
> Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2009.pdf
>
> CV: http://homepages.nyu.edu/~ray1/vita.pdf
>
> ----- Original Message -----
> From: "Faugere, Christophe" <[email protected]>
> Date: Friday, August 20, 2010 12:14 pm
> Subject: st: FIGARCH ado files?
> To: "[email protected]" <[email protected]>
>
>
> > Hi;
> >
> > I am running a basic GARCH(1,1) model of daily observations for the
> > SP500' earnings yield against Treasury yields. My coefficients violate
> > the stationarity condition of covariance. I tried GJR-GARCH and GARCH
> > models with various lag structures, in the end with the same problem.
> > I have two questions:
> >
> > 1) Is it legitimate to force the coefficients (L1.arch +L1.garch) to
> > sum to 1? Even though the sum is greater (but close) to 1, say 1.02;
> > and each coefficient is significant at the 99% level. Essentially
> > assuming an IGARCH(1,1).
> >
> > 2) Does anyone know about any FIGARCH ado files available in Stata?
> >
> > Thanks
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> *
> * For searches and help try:
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> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
> *
> * For searches and help try:
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> * http://www.ats.ucla.edu/stat/stata/
*
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* http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
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* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/