Re: Improving GEQO

boix <boix@uclv.cu> writes:
> Hello, my partner and me are working with the goal of improve the GEQO's 
> performance, we tried with Ant Colony Optimization, but it does not 
> improve, actually we are trying with a new variant of Genetic Algorithm, 
> specifically Micro-GA. This algorithm finds a better solution than GEQO 
> in less time, however the total query execution time is higher. The 
> fitness is calculated by geqo_eval function. Does anybody know why this 
> happens?

Well, for one thing, you can't just do this:

+                    aux = aux1;

without totally confusing all your subsequent steps.

You'd want to copy the pointed-to data, likely, not the pointer.
        regards, tom lane