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Re: Two stage least squares

To: <Daniel_J_Celta@fpl.com>, "'Neil Hepburn'" <nhepburn@ualberta.ca>
Subject: Re: Two stage least squares
From: "John Fox" <jfox@mcmaster.ca>
Date: Sat, 22 Jul 2006 10:06:07 -0400
Cc: <s-news@lists.biostat.wustl.edu>
In-reply-to: <OFF970DA81.26C47CEB-ON852571B1.00074123-852571B1.0008B56C@fpl.com>
Thread-index: Acarnqd/ybzJOgMSRGaKdc4aBSAF5gB+O9Xw
Dear Daniel and Neil,

I'm not sure what the OLS function in Finmetrics does, but the name doesn't
suggest 2SLS.

Although I haven't tried it, you could probably port the tsls function in
the R sem package to S-PLUS with little effort. Indeed, programming 2SLS
from scratch shouldn't be too hard, since the calculations are very simple.

I hope this helps,
 John

--------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
-------------------------------- 

> -----Original Message-----
> From: s-news-owner@lists.biostat.wustl.edu 
> [mailto:s-news-owner@lists.biostat.wustl.edu] On Behalf Of 
> Daniel_J_Celta@fpl.com
> Sent: Wednesday, July 19, 2006 8:35 PM
> To: Neil Hepburn
> Cc: s-news@lists.biostat.wustl.edu
> Subject: Re: [S] Two stage least squares
> 
> Neil
> Try the Finmetrics library.  There is an OLS function that 
> may do the trick.
> 
> Daniel J Celta
> Project Valuation - Special Valuations
> 561 691 7653
> 
> 
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>                       "Neil Hepburn"                          
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>                       <nhepburn@ualberta.ca>           To:    
>    s-news@lists.biostat.wustl.edu                             
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>                       s-news-owner@lists.biosta        
> Subject:  [S] Two stage least squares                         
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>                       t.wustl.edu                             
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>                       07/19/2006 08:40 PM                     
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> 
> I'm looking for a library to do two stage least squares in 
> S-Plus.  I've found the sem library for R but have not found 
> anything for S-Plus.  Anyone got any ideas?
> 
> Cheers,
> Neil
> 
> 
> =============================================
> Neil Hepburn, Economics Instructor
> Department of Social Sciences, Augustana Faculty University 
> of Alberta Camrose, Alberta
> 
> Email nhepburn@ualberta.ca
> URL http://www.augustana.ca/programs/profs/nhepburn/
> 
> 
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