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st: RE: condition of Hessian


From   "Thomas W. Volscho" <thomas.volscho@sbcglobal.net>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: condition of Hessian
Date   Wed, 19 Mar 2008 22:51:57 -0400

I am on a statistics software mailing but this was right above one of your emails so I thought it was from you

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Teresa Dale Nelson
Sent: Wednesday, March 19, 2008 10:07 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: condition of Hessian

Dear Members,
Can anyone please explain how I use the command to retrieve the 
condition of the Hessian matrix after running an mprobit? Stata 
specifies the command this way:
real scalar cond  =  norm(A, p) * norm(A^(-1), p) where p takes on the 
value 0, 1, 2 or missing (.)
to collect the matrix A, I am using e(oim)  is this acceptable?
Could someone please show me an example of code for this command that 
they've actually used?
Thank you.
Best,
T.Nelson
UT Dallas

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