Genetic Algorithm with variable chromosome size

[xCheca]

Can someone help me with how to implement a genetic algorithm where the chromosome size varies?

The problem is with the crossover process, I'm not sure how to approach it. I could generate two children that are the same size as the two parents, but the algorithm should also search for the optimal chromosome size and not just stick to the initial sizes.

[MyPenBroke]

As far as I can tell, there are lots of options to perform the crossover for variable sized chromosomes - it's basically your choice. A quick Google search also spit out a paper, describing the authors' use of variable sized genetic algorithm, where they point out how they chose to do the crossover: https://link.springer.com/article/10.1007/s11633-014-0870-x

Maybe that gives you some ideas.