Re: [jgap-users] Using 'FitnessFunction.evaluate' to evaluate Chromosomes against EACH OTHER?

[<ric...@ca...>]

Neil,

Thank you so much for such a fantastic response and a truly impressive
turn-around time.

I'm afraid, for my own part, I'm some way from being in a position to use
BulkFitnessFunction (I first have to code a reasonably generic way to turn
Chromosomes into JOONE networks and create the 'play each other' code,
though in my defence I HAVE built the game playing simulation part :), so
please forgive me if I go quiet for a little while.

I wasn't expecting you to come back so fast (let alone this be part of a
release), and was just trying to 'get all my ducks in a row' ready to start
(so to speak).

Having said that, I WILL get to this (when hobby time allows), and WILL let
you know my results. In the meantime, many thanks again, and I hope - as
you said - others find this a generally useful feature,

Richard.



                                                                                                                        
                      Neil Rotstan                                                                                      
                      <ne...@bl...>                To:       jga...@li...                     
                      Sent by:                           cc:                                                            
                      jga...@li...ur        Subject:  Re: [jgap-users] Using 'FitnessFunction.evaluate' to 
                      ceforge.net                         evaluate Chromosomes against EACH OTHER?                      
                                                                                                                        
                                                                                                                        
                      06/03/2003 02:25 PM                                                                               
                                                                                                                        
                                                                                                                        




Hi Richard,

Ok, I've checked in an initial implementation of the bulk fitness function
to CVS. You'll need to perform an anonymous checkout to get the code (or,
if you prefer, I can mail you a tar or zip). If you want to go the
anonymous checkout route, you can find a link at the bottom of the JGAP
home page: http://jgap.sourceforge.net

Basically, you need to do two things to use the new code: first, extend
BulkFitnessFunction for your fitness function instead of the normal
FitnessFunction class; and second, when you setup your Configuration
object, use the setBulkFitnessFunction() method on the Configuration
object instead of the normal setFitnessFunction() method. Note that you
cannot use both a bulk fitness function and a normal fitness function at
the same time--the Configuration object should throw an exception if you
try.

Otherwise, everything should work the same. To set the fitness values of
the chromosomes in your fitness function, use the new setFitnessValue()
method in the Chromosome class.

Let me know if you have any questions or run into any problems! I'll write
up some additional documentation and create some examples in the next few
days.

Neil



On Thu, 6 Mar 2003 ric...@ca... wrote:

> Neil,
>
> No, you haven't misunderstood me, and yes - that would be perfect for
what
> I'm trying to achieve: sorry I didn't realize where you were coming from
> earlier :)
>
> Richard.



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