[Scilab-users] fmincon toolbox update
Stéphane Mottelet
stephane.mottelet at utc.fr
Mon Jun 7 09:38:06 CEST 2021
Hi,
Le 07/06/2021 à 09:20, CHEZE David 227480 a écrit :
>
> Hi all,
>
> I installed both SciPOpt and fmincon from ATOMS on Scilab 6.1.0
> WIN10-64bits, a few weeks ago and the demos are running properly. I
> had some minor dependencies issues while installing, I don’t remember
> exactly , probably the SciIPopt version was not aligned with the one
> required by fmincon.
>
Yes, there were successive versions of sci_ipot over a short period,
and since the updates only pop in the atoms gui (not at loading time),
you can easily miss them. However, the situation is stable since the end
of april and I don't plan a new release until the end of 2021.
S.
> My 2 cents
>
> David
>
> *De :*users <users-bounces at lists.scilab.org> *De la part de* Stéphane
> Mottelet
> *Envoyé :* samedi 5 juin 2021 22:17
> *À :* Users mailing list for Scilab <users at lists.scilab.org>
> *Objet :* Re: [Scilab-users] fmincon toolbox update
>
> May I ask if there are there some Windows users who read this post and
> who successfully installed sci_ipopt or fmincon ?
>
> S.
>
>
>
> Le 5 juin 2021 à 15:21, Éric Dubois <grocer.toolbox at gmail.com
> <mailto:grocer.toolbox at gmail.com>> a écrit :
>
>
>
> Thanks Stéphane for your quick answer
>
> I have tried installing fmincon first, then scicolpack (it works),
> then sci_ipopt and it does not work: only
> file sci_ipopt_1.3.bin.x64.Windows.zipis downloaded. So it seems:
>
> - first that dependencies are not deal with for the fmincon
> distribution that Atoms uses;
>
> - second, that there is some problem using Atoms for loading
> sci_ipopt
>
> Maybe I should not use Atoms, but when it works it is the most
> convenient way to download a module.
>
> Éric
>
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>
>
> Le sam. 5 juin 2021 à 14:06, Stéphane Mottelet
> <stephane.mottelet at utc.fr <mailto:stephane.mottelet at utc.fr>> a écrit :
>
> Hi Eric,
>
> Could you be more precise ? I have I installed fmincon on at
> least 10 different machines for testing purposes (mostly
> under Windows 10) and did not encounter any problem. Atoms is,
> I must say, a very unstable (not to say crappy) piece of
> software and in particular very hard to use smoothly when your
> are developing some modules and play e.g. with offline mode.
>
> What I would do first is to uninstall every module then
> install fmincon. If problem is still here please help me by
> debugging a bit...
>
> S.
>
>
>
> Le 5 juin 2021 à 11:29, Éric Dubois
> <grocer.toolbox at gmail.com
> <mailto:grocer.toolbox at gmail.com>> a écrit :
>
>
>
> Hello Stéphane
>
> This seems very interesting, but download through Atoms
> does not work (at least for me: I use Scilab 6.1.0 under
> Windows 10): dependencies (Sci-colpac, Sci-IPOt, for those
> I have noticed) are not dealt with. Moreover, trying to
> install Sci-IPOt with Atoms fails. By the way it makes
> also make fail lthe oading of any module that could have
> been installed with Atoms, which reveals an undesirable
> feature of Atoms: failure to load a module should not
> prevent the loading of other ones.
>
> Best regards,
>
> Éric
>
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>
> Le mar. 1 juin 2021 à 12:21, Stéphane Mottelet
> <stephane.mottelet at utc.fr
> <mailto:stephane.mottelet at utc.fr>> a écrit :
>
> Hi,
>
> Le 01/06/2021 à 09:53, CHEZE David 227480 a écrit :
> > Dear Stephane,
> >
> > Thank you for offering these enhanced capabilities
> in Scilab, fmincon and SciIPOpt. I'm about giving a
> try in comparison with leastsq(), on dynamic model
> parameter (~5-10) calibration purpose, based on
> measurement deviation, as time series (250 to >1000
> samples). In general for fmincon and SciIPOpt, may I
> provide the objective function with inputs argument
> through the list() syntax like
> objf=list(myofunction,x,in1,in2,..) ?
>
> Yes, you have such an example in the fitting demo ;
>
> https://gitlab.com/esi-group/scilab/forge/fmincont/-/blob/master/demos/fmincon_fit.sce
> <https://antispam.utc.fr/proxy/v3?i=d1l4NXNNaWE4SWZqU0dLWcuTfdxEd98NfWIp9dma5kY&r=MXJUa0FrUVJqc1UwYWxNZ_l2XdONNMobHTOkcFU5rSq3Vvg51usC-EIDTIbTsVuR&f=c2xMdVN4Smh2R2tOZDdIRKWh7T4_OG5ZJYSqRVIQDaJJ7TL3JgtPt3A-KXkIdypi&u=https%3A//gitlab.com/esi-group/scilab/forge/fmincont/-/blob/master/demos/fmincon_fit.sce&k=fjzS>
>
> S.
>
> >
> > Thank you for your advice,
> >
> > David
> >
> >
> > -----Message d'origine-----
> > De : users <users-bounces at lists.scilab.org
> <mailto:users-bounces at lists.scilab.org>> De la part de
> Stéphane Mottelet
> > Envoyé : lundi 19 avril 2021 10:43
> > À : Users mailing list for Scilab
> <users at lists.scilab.org <mailto:users at lists.scilab.org>>
> > Objet : [Scilab-users] fmincon toolbox update
> >
> > Hi all,
> >
> > I would like to inform you that the fmincon toolbox
> has been updated
> >
> (https://antispam.utc.fr/proxy/v3?i=cWdzUmRSM0ZiRHpoUDkxTSw3-90dQgKDkqmWWemZ6js&r=WXNQOUY5VXRSNUlTdlVTTgAgPzRHrDev93-c71JTxG3gYERdftx8enpEGCicW5Zy&f=R0pWUVNEaUFuMTBCTlptbqaYxU0NWnHz-Aov_fSSM1D4vfIz2L0jb50-moW0RphD&u=https%3A//atoms.scilab.org/toolboxes/fmincon/1.0.2&k=8YLU
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> and now includes a major feature: the Efficient
> Computation of Sparse Hessian using Coloring algorithm
> (scicolpack is now a dependency of fmincon). This
> feature was missing and now allows fmincon to consider
> really big problems. A example of such is given in the
> "minimal surface demo" which compares 3 different
> approaches of the problem: one with finite differences
> gradient, and BFGS Hessian, one with exact gradient
> and BFGS Hessian, and the last with exact gradient and
> finite differences sparse Hessian. The time factor
> between the first and the third approchach is around
> 200 for a 21x21 square but you can edit the demo file
> and increase this value. For a 51x51 square the third
> approach takes only
> > 0.45 seconds and is 2500 times faster. For a 101x101
> square the first approach takes forever and the third
> ones takes less than 2 seconds and is still 10 times
> faster than the second one.
> >
> > If some of you still use other softwares for large
> scale optimization, maybe you can now give Scilab a
> try. If you need a better control on parameters and/or
> if you are not a former/actual user of Matlab's
> fmincon, I recommend using directly ipopt (from
> sci_ipopt toolbox). But the fmincon api is quite easy
> to use. Don't hesitate to took at the code of the
> several new demos.
> >
> > Don't hesitate to contact me if you have some
> problems using fmincon of just to say that you are
> using it with success !
> >
> > Regards,
> >
> > --
> > Stéphane Mottelet
> > Ingénieur de recherche
> > EA 4297 Transformations Intégrées de la Matière
> Renouvelable Département Génie des Procédés
> Industriels Sorbonne Universités - Université de
> Technologie de Compiègne CS 60319, 60203 Compiègne
> cedex Tel : +33(0)344234688
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> --
> Stéphane Mottelet
> Ingénieur de recherche
> EA 4297 Transformations Intégrées de la Matière
> Renouvelable
> Département Génie des Procédés Industriels
> Sorbonne Universités - Université de Technologie de
> Compiègne
> CS 60319, 60203 Compiègne cedex
> Tel : +33(0)344234688
> http://www.utc.fr/~mottelet
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--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet
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