Genetic Algorithm (ga) terminating after a few generations
3 views (last 30 days)
Show older comments
I am running a minimization calculation using the ga function. I've noticed that the ga function continually terminates after ~3 generations. This seems to be premature; however, the results I am getting are consistent. I have 6 design variables and a population of 1000 that is evenly gridded across reasonable values for each variable. In total the ga usually calls the objective function 10^5 times before terminating and meets the function and constraint tolerances (both 10^-6). I am curious to know if terminating after 3 generations is a "normal" behavior or if this indicates a problem with my objective function. Any help is greatly appreciated.
0 Comments
Accepted Answer
Star Strider
on 15 Aug 2023
That is certainly consistent if it converges quickly, and especially if it produces a reasonable result. If your 'InitialPopulationMatrix' is (1000x6) then it is quite possible that it finds a good fit in 3 generations. (I generally use smaller matrices.)
4 Comments
More Answers (1)
Alan Weiss
on 16 Aug 2023
Almost certainly this is because you use nonlinear constraints. When you use nonlinear constraints, there are very few major iterations in the solver. For an example, see https://www.mathworks.com/help/gads/constrained-minimization-using-ga.html.
Alan Weiss
MATLAB mathematical toolbox documentation
0 Comments
See Also
Categories
Find more on Genetic Algorithm in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!