Info
Diese Frage ist geschlossen. Öffnen Sie sie erneut, um sie zu bearbeiten oder zu beantworten.
Optimization: which function is better for my case?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
I have to perform an optimization with 3 inputs over a cost function. The 3 inputs have precise boundaries and stay around 1. I have tried:
- fminbnd, but it seems to not accept vector x;
- fmincon, but it shows me an error (see figure below);
- fminsearch, which has a good performance, but of course the result doesn't satifies every time the constraint.
Do you have suggestions?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/149216/image.png)
0 Kommentare
Antworten (2)
Kirby Fears
am 18 Sep. 2015
Bearbeitet: Kirby Fears
am 18 Sep. 2015
From the fmincon screen shot, you didn't get any errors - just a warning. It's more of a notification.
fmincon is the way to go. Go through the documentation carefully to insure that you're supplying inputs as intended. Keep an eye on setting the tolerances and boundaries appropriately.
0 Kommentare
Abdelmoumen Bacetti
am 29 Nov. 2015
It would be better if you can provide some code.
From the output, and regarding the narrow interval of your variables, I suspect that your cost function is constant or the step size is not small enough to allow the algorithm find a decreasing direction.
If you had chosen a small step, make sure that your function is convex in the interval by plotting it.
0 Kommentare
Diese Frage ist geschlossen.
Siehe auch
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!