ent Google Summer of
Code effort.
John Nash
On 08/30/2011 06:00 AM, r-help-requ...@r-project.org wrote:
> Message: 10
> Date: Mon, 29 Aug 2011 02:10:36 -0700 (PDT)
> From: Kathie
> To: r-help@r-project.org
> Subject: [R] gradient function in OPTIMX
> Message-ID: <131460903
nt problem in optimx.
Rubén H. Roa-Ureta, Ph. D.
AZTI Tecnalia, Txatxarramendi Ugartea z/g,
Sukarrieta, Bizkaia, SPAIN
-Original Message-
From: r-help-boun...@r-project.org on behalf of Kathie
Sent: Mon 8/29/2011 11:10 AM
To: r-help@r-project.org
Subject: [R] gradient function in OPTIMX
Dear
Hi Kathie,
The gradient check in "optimx" checks if the user specified gradient (at
starting parameters) is within roughly 1.e-05 * (1 + fval) of the numerically
computed gradient. It is likely that you have correctly coded up the gradient,
but still there can be significant differences b/w num
Dear R users
When I use OPTIM with BFGS, I've got a significant result without an error
message. However, when I use OPTIMX with BFGS( or spg), I've got the
following an error message.
> optim
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