Script run takes too much time

Question

Azime Beyza Ari 2022-4-9

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https://ww2.mathworks.cn/matlabcentral/answers/1692645-script-run-takes-too-much-time

评论： Azime Beyza Ari 2022-4-9

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!

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Answer 1

Sam Chak 2022-4-9

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编辑：Sam Chak 2022-4-9

Hi @Azime Beyza Ari

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

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

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

Please check the algorithm again.

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Sam Chak 2022-4-9

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

Azime Beyza Ari 2022-4-9

GetStartedWithProblemBasedOptimizeLiveEditorTaskExample.mlx

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!

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