Re: [jgap-users] Custom genes?

[Ary J. <ary...@gm...>]

Well, if the private method org.jgap.impl.CrossOverOperator.doCrossover(...)
were public, it would be easier... I just need to extends the CrossOver
operator and override this method to personalize only the crossover logic...
right?

On Thu, Jun 5, 2008 at 10:08 AM, Ary Junior <ary...@gm...> wrote:

> Hi, thanks for your reply... I'm thinking about create my own
> CrossoverOperator based on source code:
>
>
> http://jgap.cvs.sourceforge.net/jgap/jgap/src/org/jgap/impl/CrossoverOperator.java?view=log
>
> My genotype is ever an DoubleGene[] array with n*6 elements. What do you
> think?
>
>
> On Wed, Jun 4, 2008 at 9:18 PM, socratesone <soc...@gm...> wrote:
>
>>
>> Having a custom crossover function seems to me the better approach,
>> however
>> that doesn't necessarily mean that creating custom genes is a bad idea.
>> You
>> might want to go with both.
>>
>> For instance:
>> Gene[] genotype1 = new Gene[6];
>> Gene[] genotype2 = new Gene[6];
>>
>> genotype1[0] = new DoubleGene(conf, 0.5, 1.5); // same goes for 1 and 2 in
>> the array
>> genotype1[3] = new CustomGene(conf, 0.00, 360.00); // same goes for 4 and
>> 6
>> in the array
>>
>> genotype2[0] = new DoubleGene(conf, 0.5, 1.5);
>> genotype2[3] = new CustomGene(conf, 0.00, 360.00);
>>
>> Gene[] newGenotype = CustomCrossover(genotype1, genotype2);
>>
>> Creating a custom crossover would allow you to alter whatever genes you
>> wanted, either by array index or, if you decide to go with custom genes,
>> by
>> the gene subclass.
>>
>> Creating a custom gene would allow greater flexibility when making
>> changes,
>> clearly identify it in the code as a different kind of Gene (which it is)
>> and would give more information to the custom crossover function.
>> Determining the gene based on subclass rather than array index may also
>> allow you to incorporate additional genes into individuals through
>> mutation,
>> letting a "smart" custom crossover function adapt to more (or less) than 6
>> genes, if you ever decided to change the genotype class or create a
>> sub-class that can handle a dynamic array length.
>>
>>
>> Ary Junior-3 wrote:
>> >
>> > Hi, in my application, each individual have 6 genes, see below:
>> >
>> > ...
>> > Gene[] genotype = new Gene[6];
>> > genotype[0] = new DoubleGene(conf, 0.5, 1.5);
>> > genotype[1] = new DoubleGene(conf, 0.5, 1.5);
>> > genotype[2] = new DoubleGene(conf, 0.5, 1.5);
>> > genotype[3] = new DoubleGene(conf, 0.00, 360.00);
>> > genotype[4] = new DoubleGene(conf, -90.00, 90.00);
>> > genotype[5] = new DoubleGene(conf, -90.00, 90.00);
>> > ...
>> >
>> > Now, I want to restrict the crossover operation. When two solutions are
>> > mating, the genes 0, 1 and 2 must be swaped together. The same for genes
>> > 3,
>> > 4 and 5. To solve my problem I need define my own custom genes?
>> >
>> > Thanks very much!!!
>> >
>> > Ary Junior
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Custom-genes--tp17410129p17659515.html
>> Sent from the jgap-users mailing list archive at Nabble.com.
>>
>>
>> -------------------------------------------------------------------------
>> Check out the new SourceForge.net Marketplace.
>> It's the best place to buy or sell services for
>> just about anything Open Source.
>> http://sourceforge.net/services/buy/index.php
>> _______________________________________________
>> jgap-users mailing list
>> jga...@li...
>> https://lists.sourceforge.net/lists/listinfo/jgap-users
>>
>
>