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Discussion Groups | Matlab DSP | Ans changes with initial guess while using fminsearch etc

Technical discussion about Matlab and issues related to Digital Signal Processing.

  

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Ans changes with initial guess while using fminsearch etc - nand...@rediffmail.com - May 30 7:18:03 2008



Dear all,
Im getting started with matlab. My problem is same as that of Alexander who has recently posted
a thread. When im using functions like fminsearch or lsqnonline of fsolve etc., my answer
changes with the initial guess. What are the possible reasons for this.


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Re: Ans changes with initial guess while using fminsearch etc - Francisco Marcuzzo - May 30 11:57:57 2008

 Hi,

 these solvers find the local minima, and not the global minima. Thatīs the
point. Always when you change initial guess the results will be differents.
Read the help, it will help you.

 Regards.

2008/5/30 <n...@rediffmail.com>:

>   Dear all,
> Im getting started with matlab. My problem is same as that of Alexander who
> has recently posted a thread. When im using functions like fminsearch or
> lsqnonline of fsolve etc., my answer changes with the initial guess. What
> are the possible reasons for this.
>

-- 
Francisco Marcuzzo


(You need to be a member of matlab -- send a blank email to matlab-subscribe@yahoogroups.com )