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Re: GSoC 2015: Optimization Package: Non-linear and constrained least sq


From: Ben Abbott
Subject: Re: GSoC 2015: Optimization Package: Non-linear and constrained least squares lsqcurvefit, lsqlin, lsqnonlin
Date: Mon, 06 Apr 2015 14:57:40 -0400

> On Feb 24, 2015, at 3:42 AM, Olaf Till <address@hidden> wrote:
> 
>> 
>> I am studying the Levenberg-Marquardt algorithm from [2].
> 
> This seems to be a general introduction to LM. An actual algorithm
> must also, among others, take measures to be numerically stable. It is
> usually best to start from one of the several already existing
> algorithms (I know this is your intention). In the optim package we
> have, among others, an SVD-based algorithm.

I came across an Levenberg-Marquardt implementation for Octave.

        https://sites.google.com/site/ulfgri/numerical/levmar

Perhaps it is useful.

Ben




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