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Offline shinavn  
#1 Posted : 03 July 2019 11:03:43(UTC)
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For this particular example, Carlos algorithm spits out in < hart beat !
Thanks again Carlos, it will surely help revamp some/many of the GenfitMinimize.
Shina
Offline omorr  
#2 Posted : 03 July 2019 15:51:17(UTC)
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Originally Posted by: shinavn Go to Quoted Post
For this particular example, Carlos algorithm spits out in < hart beat !
Thanks again Carlos, it will surely help revamp some/many of the GenfitMinimize.
Shina


Could you be more specific please. What example are you talking about?

Regards,
Radovan
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
thanks 1 user thanked omorr for this useful post.
on 03/07/2019(UTC)
Online Jean Giraud  
#3 Posted : 03 July 2019 17:51:07(UTC)
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Originally Posted by: shinavn Go to Quoted Post
For this particular example, Carlos algorithm spits out in

Please, share your application.
LM covers a good % of all fits in Mathcad.
Cases LM fails, Conjugate Gradient is the sole rescue.
Many model functions can only be fitted by hand.

Cheers ... Jean
Online Jean Giraud  
#4 Posted : 10 July 2019 16:05:59(UTC)
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For this particular example, Carlos algorithm spits out in < hart beat !
Thanks again Carlos, it will surely help revamp some/many of the GenfitMinimize.
Shina

...................
You are right About LM, however not so simple.
al_nleqsolve, LM, ConjugateGradient that produce in Smath, all dependent
upon initials and reflexivity of the model +++ the approach technique.
Data reduction is a great approach technique [Kirby, Thermocouples ...]
In Mathcad LM as well as CG, a technique that works well to initialize
wrt many models is to pass manually initials through 2 points.
That was not explored with Carlos LM.
That technique through 2 points did work well in some Smath fit,
but failed in other fits. Maybe you are working hard on that stuff ?
Attached for the interest of this visit.

Genfit_3.PNG

Genfit Chemist.sm (35kb) downloaded 18 time(s).
Genfit Minimize Rational KHL.sm (46kb) downloaded 14 time(s).
Genfit Pharmacokinetics.sm (42kb) downloaded 14 time(s).
Online Jean Giraud  
#5 Posted : 11 July 2019 16:38:07(UTC)
Jean Giraud


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... for your delight => try Laser

Genfit Convolution Laser.sm (232kb) downloaded 16 time(s).
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