[Scilab-users] fmincon won't work

[Stéphane Mottelet]

Hello,

Le 13/03/2014 19:31, anastasia athanasiou a écrit :
> Hello everyone,
>
> it is true, I couldn't produce any meaningful results using /fmincon/ 
> in Scilab 5.4.1, while the module worked perfectly in the previous 
> version (Scilab 5-3.3).
> However, running the nonlinear constrained optimization problem in 
> Scilab proved  rather slow.
> Scilab required the triple time for the solution of the  program with 
> respect to Matlab.
> At this point I should add that I was very careful to use the same 
> optimset in both Scilab and Matlab runs.
>
> Does anyone have any experience in /fmincon/ time performance in Scilab?
>
It seems that nobody cares about optimization issues in the Scilab 
team... Common guys, at least show that you are still alive ! Are you 
just able to send us e-mails about the Scilab-Tec event :-D ? The 
problem with sci-ipot seems to be an issue with the interface code, 
maybe someone out there could be able to help a little bit ? I thought 
that "Scilab complimentary modules" were supposed to get some particular 
support from the team.

> PS. Stéphane, is the fsqp toolbox accessible to all Scilab users?
>
Of course. Which platform/os are you using ?

S.

> Thank you for your attention, Natasha
>
> On 26/02/2014 20:25, "Stéphane Mottelet (UTC)" wrote:
>> Hello,
>>
>> Currently, sci_ipopt seems to be broken on Linux and MacOSX when 
>> using the atoms package for Scilab 5.4.1. Since fmincon relies on 
>> sci_ipot, fmicon is equally broken... BTW, users needing an 
>> optimization toolbox with general non-linear constraints are not 
>> lucky with Scilab. As far as I am concerned, I still use fsqp, which 
>> cannot be easily released as an Atoms module because of proprietary 
>> code. But Ipopt is said to really outperform fsqp, so I am rather 
>> impatient to see it coming.
>>
>> As it is the only module of this class/kind (optimization + 
>> complementary module), the Scilab team should take care of the 
>> functionnality of it when new versions of Scilab are released.
>>
>> Stéphane
>>
>>
>> Le 26/02/2014 20:13, Stéphane Mottelet a écrit :
>>>
>>>
>>> ---------- Forwarded message ----------
>>> From: *Paul Bignier* <paul.bignier at scilab-enterprises.com 
>>> <mailto:paul.bignier at scilab-enterprises.com>>
>>> Date: 2014-02-26 16:46 GMT+01:00
>>> Subject: Re: [Scilab-users] fmincon won't work
>>> To: athanasiou at dica.unict.it <mailto:athanasiou at dica.unict.it>, 
>>> "International users mailing list for Scilab." 
>>> <users at lists.scilab.org <mailto:users at lists.scilab.org>>
>>>
>>>
>>>
>>> Hello,
>>>
>>> Did you check that your problem matched the cases described on 
>>> fmincon home page <http://atoms.scilab.org/toolboxes/fmincon>?
>>>
>>> Regards,
>>> Paul
>>>
>>>
>>>
>>> On 02/26/2014 04:13 PM, Anastasia Athanasiou wrote:
>>>> Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
>>>> I installed fmincon 0.3.1-1 using atoms, but when I tried it on the first
>>>> help example I obtained a rather weird output:
>>>>
>>>> fval  =    0.
>>>>
>>>> x  = 10^(-318) *    Inf    Inf
>>>>
>>>> Could anyone help me please?
>>>>
>>>> Thank you in advance, Natasha
>>>>
>>>> _______________________________________________
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>>>
>>> -- 
>>> Paul BIGNIER
>>> Development engineer
>>> -----------------------------------------------------------
>>> Scilab Enterprises
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>>>
>>
>>
>>
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