From: Nguyen An Nguyen on
Hi,
I wonder if it is possible to replicate a PROC AUTOREG model by
running multiple linear regressions (such as Proc Reg). The reason for
doing this is that I need to manipulate data manually (such as weight/
reweight observations, adjust for outliers and create different
regimes) that AUTOREG would not accommodate.
My base-line model is essentially:
Proc Autoreg data = a;
model y = ylag1 x y dummy_z / garch(1,1);

Any advice is much appreciated!



From: Murphy Choy on
Hi,

Please check the sugi papers for mnw or wuss where a autoreg macro was discussed.

------Original Message------
From: Nguyen An Nguyen
Sender: SAS(r) Discussion
To: SAS-L(a)LISTSERV.UGA.EDU
ReplyTo: Nguyen An Nguyen
Subject: replicate PROC AUTOREG using PROC REG
Sent: Jan 31, 2010 2:45 AM

Hi,
I wonder if it is possible to replicate a PROC AUTOREG model by
running multiple linear regressions (such as Proc Reg). The reason for
doing this is that I need to manipulate data manually (such as weight/
reweight observations, adjust for outliers and create different
regimes) that AUTOREG would not accommodate.
My base-line model is essentially:
Proc Autoreg data = a;
model y = ylag1 x y dummy_z / garch(1,1);

Any advice is much appreciated!


Sent from my BlackBerry Wireless Handheld

--
Regards,
Murphy Choy

Certified Advanced Programmer for SAS V9
Certified Basic Programmer for SAS V9
From: shiling99 on
On Jan 30, 1:45 pm, Nguyen An Nguyen <nguyenanngu...(a)gmail.com> wrote:
> Hi,
> I wonder if it is possible to replicate a PROC AUTOREG model by
> running multiple linear regressions (such as Proc Reg). The reason for
> doing this is that I need to manipulate data manually (such as weight/
> reweight observations, adjust for outliers and create different
> regimes) that AUTOREG would not accommodate.
> My base-line model is essentially:
> Proc Autoreg data = a;
> model y = ylag1 x y dummy_z / garch(1,1);
>
> Any advice is much appreciated!

I believe that you cannot bypass it. The garch model is done under
likelihood estimation which is not available in REG.

But It can be don in nlmixed and nlp.