In cooperative coevolution algorithms, a high dimensional vector is broken into smaller vectors, each of which is optimized separately using EAs for fewer dimensions and then recombined.
What is the fitness function used to optimize those? It can't be the same benchmark function, as those are for higher dimensions.
I am specifically talking with respect to the algorithm DECC-G ("Large Scale Evolutionary Optimization Using Cooperative Coevolution" by Z. Yang, K. Tang, X. Yao). What is the fitness function used to optimize
subpop in SaNSDE and
wpop in DE?