Re: [R] BFGS and Neldear-Mead

From: Ravi Varadhan <rvaradhan_at_jhmi.edu>
Date: Mon, 21 Mar 2011 10:36:16 -0400

Yes, your "optimx" result tells me that Nelder-Mead did not converge. It was terminated because it exceeded the maximum number of iterations allowed. In "optimx" you can increase the `itnmax' argument from its default value to accomplish this.

Ravi.



Ravi Varadhan, Ph.D.
Assistant Professor,
Division of Geriatric Medicine and Gerontology School of Medicine Johns Hopkins University

Ph. (410) 502-2619
email: rvaradhan_at_jhmi.edu

-----Original Message-----
From: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org] On Behalf Of LC-Bea Sent: Monday, March 21, 2011 9:12 AM
To: r-help_at_r-project.org
Subject: Re: [R] BFGS and Neldear-Mead

Sorry for posting too much!

i found that in Nelder-Mead the result is "1" i run this algorith too many times with several data maybe the problem is that

i have to give a bigger number of iterations

LucĂ­a

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Received on Mon 21 Mar 2011 - 14:40:47 GMT

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