On Dec 4, 2007, at 4:23 AM, David Robert White wrote:

> If we're sharing individuals that are "good", we'd probably want to  
> share those occupying niches, so these niches could then be  
> explored by multiple islands.  So it would be nice to separate  
> standard fitness from such niching fitness measures, and have  
> separate evaluation for both of them.  This would allow re- 
> evaluation of fitness sharing after migration, without re- 
> evaluating standard fitness.  Is there a nice way of doing this?

The easiest way to do this is to just use a subclass of Fitness (or  
KozaFitness, etc.) that contains a separate "nichedFitness"  
variable.  Of course, you'll still need to update this variable  
somewhere: most likely in the Breeder (or if you wish, the Evaluator).

Sean