Script run takes too much time

hello everyone,

ı am working on a problem where i use global optimization toolbox problem based approach. I choosed genetic algorithm as a solver. I do not know whay but it says script is running but never gaves me a solution. I need assistance to understand the reason behind it. I previously used solver based approach but it was not taking any time to run. I read that problem based normlaly takes longer time to run compared to the solver based but it has been hours and it still did not gave a solution. Is this normal? or am i doing something wrong?

thank you in advance!

Answer 1

[Sam Chak]

Hi @Azime Beyza Ari

Generally, there should be at least three termination conditions (stopping criteria):

1. Stop when maximum number of generations (iterations) is reached.
2. Stop when the function tolerance is reached.
3. Stop when the step tolerance is reached.

https://www.mathworks.com/help/optim/ug/tolerances-and-stopping-criteria.html

Please check the algorithm again.

[Azime Beyza Ari]

thank you for your answer!

I have checked it and added tolerance(only that was missing). But still have the same problem.

here is a screenshot of what it says.

It does no go any further from this. I dont think it even iterates

[Sam Chak]

Hmm... Can you check if the initial guesses are causing the function to approach a singularity?

[Azime Beyza Ari]

Sorry to bother you with this but i am new to matlab. How can i check for initial guesses? Or if you can have a look into my file that would be amazing.

i will ttch the file!