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Re: Help in leasqr


From: Olaf Till
Subject: Re: Help in leasqr
Date: Sat, 27 Aug 2016 18:43:41 +0200
User-agent: Mutt/1.5.23 (2014-03-12)

On Fri, Aug 26, 2016 at 05:36:35PM +0200, Bharath R wrote:
> Could you please throw some light on solving
> differential equation to get the calculated data.?

Current stable Octave offers 'lsode', upcoming versions additional
solvers 'ode..'. You'll probably have to study this subject a
bit... Optimizing dynamic models is sometimes difficult since the
numeric solving of ODEs introduces some inaccuracy. In problematic
cases it may help to solve additional 'sensitivity equations' with the
ODEs and use the result to provide the optimizer with an explicit
Jacobian. But I won't go into this here.

Olaf

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