Save all the optimization results from MultiStart and Global Search

4 views (last 30 days)
Hello Matlab Community,
I have a questio about the Matlab Global Optimization features.
I would like to get, at the end of the optimization, all the solutions, also the ones with negative exit flags and respective parameters values.
I use the following syntax
[x,fval,exitflag,output,solutions] = run(...)
but I only get, in [solutions], the local minima with a positive exit flag, and I would like to check all the others as well.
Is there a way to accomplish what I need, that I have missed?
Many thanks and best regards.

Accepted Answer

Alan Weiss
Alan Weiss on 14 Dec 2018
Sorry, no, GlobalSearch and MultiStart do not consider the points corresponding to negative local exit flags as being solutions, and so do not store them in the returned GlobalOptimSolution object.
Why do you want these points?
Alan Weiss
MATLAB mathematical toolbox documentation

Sign in to comment.

More Answers (1)

Kurt Stewart
Kurt Stewart on 20 Mar 2019
You can make your solutions as global variables that get saved into a matrix
  1 Comment
Maria Angela Agizza
Maria Angela Agizza on 20 Mar 2019
Hello, thanks for the advice.
I actually solved the problem with an output function, where I exploit the "state" of the optimization to get the parameters when the calculation reaches the maximum number of iterations (attached code).
switch state
case 'done'

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by