Is there a way to save additional information in a custom crossover function for the ga and then pass it to the output function?

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Doug Rank 2021-3-27

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评论： Doug Rank 2021-3-31

I have custom crossover, mutation, and output functions for my implementation of the ga (genetic algorithm).

I would like to be able to save certain information when calling the crossover function (namely I want to know which parents produced which offspring and what the parents' scores were). Then when the output function is called, I want to refer to that information if a better solution was generated.

I have tried passing a struct to the crossover and output functions and have them both refer to it, but that doesn't seem to work out of the box.

(The scores seem to be passed to the crossover function in the field the documentation refers to as 'unused', by the way.)

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Walter Roberson 2021-3-27

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There is no provided mechanism for this.

You can use strategies such as shared variables. http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

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Walter Roberson 2021-3-31

I would not have advised using global variables. Shared variables maybe.

Doug Rank 2021-3-31

Apologies, but I'm not sure which part of your link specifically you would be referring to when you say "shared variables". I see a few different options listed, but global seemed to be the only option that made sense for what I was trying to accomplish.

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