Evaluation of repeated parameter sets in gamultiobj and paretosearch

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

Answer 1

[UDAYA PEDDIRAJU]

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.

[Dhanesh R]

Thanks for the answer.

I am using a custom objective function rather than an expression. I found the evaluations are repeated, particularly with paretosearch.