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st: Re: symmetry and homogeneity restrictions

From   Kashif Saeed <>
Subject   st: Re: symmetry and homogeneity restrictions
Date   Mon, 19 Jul 2010 23:02:51 +0530 (IST)

Dear JP,

You have written code for estimating LA-AIDS in STATA using the variables and 
equations as in the SAS example given 
at SAS 
reports, after the parameter estimates for all the  models in the 
system, Parameter Restrictions Estimates (the results of the SRESTRICT 
statements) which they say are "the Lagrangian parameter,  λ, used to impose the 

restriction" ( "λ measures the sensitivity of the system sum of square errors to 

the restriction"). However, STATA does not report such estimates. Can you inform 

what to do for obtaining these estimates in STATA?  

Best regards,
Kashif Saeed. 

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