Evaluation of repeated parameter sets in gamultiobj and paretosearch

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Dhanesh R 2024-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/2123706-evaluation-of-repeated-parameter-sets-in-gamultiobj-and-paretosearch

评论： Dhanesh R 2024-6-4

I would like to know whether solvers gamultiobj and paretosearch repeat score function evaluation if the parameter set is repeated.

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Answer 1

UDAYA PEDDIRAJU 2024-6-4

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Hi Dhanesh,

In general, these solvers are designed to avoid redundant function evaluations for identical parameter sets. They prioritize efficiency and will likely store previously calculated scores to avoid unnecessary re-computations.

However, there are a couple of things to keep in mind:

There might be a small tolerance for parameter values being considered "equal." If your parameter values are very close but not strictly identical, the solver might re-evaluate.
If you're using a custom objective function, it's possible it might re-evaluate even for identical parameter sets if it doesn't have built-in redundancy checks. Double-check your objective function for potential areas to optimize in this case.

Here are some recommendations:

Whenever possible, ensure your parameter sets are unique to avoid any potential re-evaluations.
If you're using a custom objective function, review it for opportunities to implement checks for identical parameter sets to prevent redundant calculations.

For more in-depth information, refer to the official documentation for gamultiobj: https://www.mathworks.com/help/gads/gamultiobj.html and paretosearch: https://www.mathworks.com/help/gads/paretosearch-algorithm.html.